And what, incidentally, do you think integrity is? The ability not to pick a watch out of your neighbor's pocket? No, it's not as easy as that. If that were all, I'd say ninety-five percent of humanity were honest, upright men. Only, as you can see, they aren't. Integrity is the ability to stand by an idea.
Ayn RandThat which you call your soul or spirit is your consciousness, and that which you call 'free will' is your mind's freedom to think or not, the only will you have, your only freedom, the choice that controls all the choices you make and determines your life and your character.
Ayn RandIn order to live, man must act; in order to act, he must make choices; in order to make choices, he must define a code of values; in order to define a code of values, he must know what he is and where he is โ i.e. he must know his own nature (including his means of knowledge) and the nature of the universe in which he acts โ i.e. he needs metaphysics, epistemology, ethics, which means: philosophy. He cannot escape from this need; his only alternative is whether the philosophy guiding him is to be chosen by his mind or by chance.
Ayn Rand