The Purpose of Life:
The purpose of God in creating man hath been, and will ever be, to enable him to know his Creator and to attain His Presence.
(Baha’u’llah: Gleanings, p. 70)

All men have been created to carry forward an ever-advancing civilization.
(Baha’u’llah: Gleanings, p. 215)

Having created the world and all that liveth and moveth therein, He [God], through the direct operation of His unconstrained and sovereign Will, chose to confer upon man the unique distinction and capacity to know Him and to love Him – a capacity that must needs be regarded as the generating impulse and the primary purpose underlying the whole of creation….
(Baha’u’llah: Gleanings, p. 65)

The knowledge of the Reality of the Divinity is impossible and unattainable, but the knowledge of the Manifestations of God is the knowledge of God, for the bounties, splendors and divine attributes are apparent in Them. Therefore, if man attains to the knowledge of the Manifestations of God, he will attain to the knowledge of God; and if he be neglectful of the knowledge of the Holy Manifestations, he will be bereft of the knowledge of God.
(`Abdu’l-Baha: Some Answered Questions, p. 222)

Spiritual and Physical Aspects:
Man is, in reality, a spiritual being, and only when he lives in the spirit is he truly happy.
(`Abdu’l-Baha: Paris Talks, p. 72)

Man has two aspects: the physical, which is subject to nature, and the merciful or divine, which is connected with God.
(`Abdu’l-Baha: Promulgation of Universal Peace, p. 41)

In man there are two natures; his spiritual or higher nature and his material or lower nature. In one he approaches God, in the other he lives for the world alone. Signs of both these natures are to be found in men. In his material aspect he expresses untruth, cruelty and injustice; all these are the outcome of his lower nature. The attributes of his Divine nature are shown forth in love, mercy, kindness, truth and justice, one and all being expressions of his higher nature. Every good habit, every noble quality belongs to man’s spiritual nature, whereas all his imperfections and sinful actions are born of his material nature.
(`Abdu’l-Baha: Paris Talks, p. 60)

Man is endowed with an outer or physical reality. It belongs to the material realm, the animal kingdom, because it has sprung from the material world. This animalistic reality of man he shares in common with the animals.
The human body is like animals subject to nature’s laws. But man is endowed with a second reality, the rational or intellectual reality; and the intellectual reality of man predominates over nature.
All these sciences which we enjoy were the hidden and recondite secrets of nature, unknowable to nature, but man was enabled to discover these mysteries, and out of the plane of the unseen he brought them into the plane of the seen.
Yet there is a third reality in man, the spiritual reality. Through its medium one discovers spiritual revelations, a celestial faculty which is infinite as regards the intellectual as well as physical realms. That power is conferred upon man through the breath of the Holy Spirit. It is an eternal reality, an indestructible reality, a reality belonging to the divine, supernatural kingdom; a reality whereby the world is illumined, a reality which grants unto man eternal life. This third, spiritual reality it is which discovers past events and looks along the vistas of the future. It is the ray of the Sun of Reality. The spiritual world is enlightened through it, the whole of the Kingdom is being illumined by it. It enjoys the world of beatitude, a world which had not beginning and which shall have no end.
(`Abdu’l-Baha: Foundations of World Unity, p. 51)

According to the Baha’i conception, the soul of man, or in other words his inner spiritual self or reality, is not dualistic. There is no such thing, as the Zoroastrians believe, as a double reality in man, a definite higher self and a lower self. These two tendencies for good or evil are but manifestations of a single reality or self. The latter is capable of development in either way. All depends fundamentally on the training or education which man receives. Human nature is made up of possibilities both for good and evil. True religion can enable it to soar in the highest realm of the spirit, while its absence can, as we already witness around us, cause it to fall to the lowest depths of degradation and misery.
(Shoghi Effendi: Lights of Guidance, p. 208)

The ego is the animal in us, the heritage of the flesh which is full of selfish desires. By obeying the laws of God, seeking to live the life laid down in our teachings, and prayer and struggle, we can subdue our egos.
(Shoghi Effendi: Unfolding Destiny, p. 453)

Distinguishing Characteristics:
Upon the inmost reality of each and every created thing He [God] hath shed the light of one of His names, and made it a recipient of the glory of one of His attributes. Upon the reality of man, however, He hath focused the radiance of all of His names and attributes, and made it a mirror of His own Self. Alone of all created things man hath been singled out for so great a favor, so enduring a bounty.
(Baha’u’llah: Gleanings, p. 65)

God has created man after His own image and likeness. He has endowed him with a mighty power which is capable of discovering the mysteries of phenomena. Through its use man is able to arrive at ideal conclusions instead of being restricted to the mere plane of sense impressions. As he possesses sense endowment in common with the animals, it is evident that he is distinguished above them by his conscious power of penetrating abstract realities. He acquires divine wisdom; he searches out the mysteries of creation; he witnesses the radiance of omnipotence; he attains the second birth – that is to say, he is born out of the material world just as he is born of the mother; he attains to everlasting life; he draws nearer to God; his heart is replete with the love of God. This is the foundation of the world of humanity; this is the image and likeness of God;…
(`Abdu’l-Baha: Promulgation of Universal Peace, pp. 262-263)

The reality of man is his thought, not his material body. The thought force and the animal force are partners. Although man is part of the animal creation, he possesses a power of thought superior to all other created beings.
(`Abdu’l-Baha: Paris Talks, p. 17)

The power of the intellect is one of God’s greatest gifts to men, it is the power that makes him a higher creature than the animal. For whereas, century by century and age by age man’s intelligence grows and becomes keener, that of the animal remains the same.
(`Abdu’l-Baha: Paris Talks, p. 72)

Good and Evil:
Every good thing is of God, and every evil thing is from yourselves.
(Baha’u’llah: Gleanings, p. 149)

Man is even as steel, the essence of which is hidden: through admonition and explanation, good counsel and education, that essence will be brought to light. If, however, he be allowed to remain in his original condition, the corrosion of lusts and appetites will effectively destroy him.
(Baha’u’llah: Baha’i Education, p. 247)

In creation there is no evil; all is good. Certain qualities and natures innate in some men and apparently blameworthy are not so in reality. For example, from the beginning of his life you can see in a nursing child the signs of greed, of anger and of temper. Then, it may be said, good and evil are innate in the reality of man, and this is contrary to the pure goodness of nature and creation. The answer to this is that greed, which is to ask for something more, is a praiseworthy quality provided that it is used suitably. So if a man is greedy to acquire science and knowledge, or to become compassionate, generous and just, it is most praiseworthy. If he exercises his anger and wrath against the bloodthirsty tyrants who are like ferocious beasts, it is very praiseworthy; but if he does not use these qualities in a right way, they are blameworthy.
(`Abdu’l-Baha: Some Answered Questions, p. 215)

Know thou that every soul is fashioned after the nature of God, each being pure and holy at his birth. Afterwards, however, the individuals will vary according to what they acquire of virtues or vices in this world. Although all existent beings are in their very nature created in ranks or degrees, for capacities are various, nevertheless every individual is born holy and pure, and only thereafter may he become defiled.
(`Abdu’l-Baha: Selections … `Abdu’l-Baha, p. 190)

Free Will:
All that which ye potentially possess can, however, be manifested only as a result of your own volition.
(Baha’u’llah: Gleanings, p. 149)

Success or failure, gain or loss, must, therefore, depend upon man’s own exertions. The more he striveth, the greater will be his progress.
(Baha’u’llah: Gleanings, pp. 81-82)

For the faith of no man can be conditioned by any one except himself.
(Baha’u’llah: Gleanings, p. 143)

Some things are subject to the free will of man, such as justice, equity, tyranny and injustice, in other words, good and evil actions; it is evident and clear that these actions are, for the most part, left to the will of man. But there are certain things to which man is forced and compelled, such as sleep, death, sickness, decline of power, injuries and misfortunes; these are not subject to the will of man, and he is not responsible for them, for he is compelled to endure them. But in the choice of good and bad actions he is free, and he commits them according to his own will.
(`Abdu’l-Baha: Some Answered Questions, p. 248)