Man cannot survive except by gaining knowledge, and reason is his only means to gain it.

Every form of causeless self-doubt, every feeling of inferiority and secret unworthiness is, in fact, man's hidden dread of his inability to deal with existence.

I will stop the motor of the world.

Man's mind is his basic tool of survival. Life is given to him, survival is not. His body is given to him, its sustenance is not. His mind is given to him, its content is not. To remain alive, he must act, and before he can act he must know the nature and purpose of his action...To remain alive, he must think.

The self you have betrayed is your mind; self-esteem is reliance on one’s power to think. The ego you seek, that essential “you” which you cannot express or define, is not your emotions or inarticulate dreams, but your intellect, that judge of your supreme tribunal whom you’ve impeached in order to drift at the mercy of any stray shyster you describe as your “feeling.”

As there can be no causeless wealth, so there can be no causeless love or any sort of causeless emotion.

Whatever he was-that robot in the Garden of Eden, who existed without mind, without values, without labor, without love-he was not man.