“Objectivism's philosophy of man begins with the fact that man is a being of volitional consciousness: man is the one animal who has to choose to be conscious, to use his mind. Man is a rational animal, and reason is his only guide to knowledge, reason being that faculty which identifies and integrates the material provided by man's senses.”

“Apart from the fact there is no normal standard of health, nobody has proved that man is necessarily cheerful by nature. And further, man, by the very fact of being man, of possessing consciousness, is, in comparison with the ass or the crab, a diseased animal. Consciousness is a disease.”

“Man is a reasoning animal.”
Rationale enim animal est homo.

“Man prides himself on being the only animal who can modify his nature, yet when he chooses to do so he is called a phony.”

“Man can have strength of character only as he is capable of controlling his faculties; of choosing a rational end; and, in its pursuit, of holding fast to his integrity against al! the might of external nature.”

“Man is not a rational animal; he is a rationalizing animal.”

“Man is a two-footed reasoning animal.”
HOMO EST ANIMAL BIPES RATIONALE

“The faculty by which man is differentiated from the lower animals is his reasoning power. But the devout believer renounces reason, refuses to explain the things which surround him, the innumerable natural phenomena, because his religious faith is enough for him. The brain loses the habit of thinking; and this religious sottishness hurls mankind back into animalism.”

“...man is the animal that moralizes. Man is also the animal that complains about being one, and says that there is an animal, a beast inside him — that he is brother to dragons.”

“At the core of the Perennial Philosophy we find four fundamental doctrines.
First: the phenomenal world of matter and of individualized consciousness — the world of things and animals and men and even gods — is the manifestation of a Divine Ground within which all partial realities have their being, and apart from which they would be non-existent.
Second: human beings are capable not merely of knowing about the Divine Ground by inference; they can also realize its existence by a direct intuition, superior to discursive reasoning. This immediate knowledge unites the knower with that which is known.
Third: man possesses a double nature, a phenomenal ego and an eternal Self, which is the inner man, the spirit, the spark of divinity within the soul. It is possible for a man, if he so desires, to identify himself with the spirit and therefore with the Divine Ground, which is of the same or like nature with the spirit.
Fourth: man’s life on earth has only one end and purpose: to identify himself with his eternal Self and so to come to unitive knowledge of the Divine Ground.”