Live and act within the limit of your knowledge and keep expanding it to the limit of your life.

I refuse to accept as guilt the fact of my own existence.

I am not primarily an advocate of capitalism, but of egoism; I am not primarily an advocate of egoism, but of reason. If one recognizes the supremacy of reason and applies it consistently, all the rest follows.

...only the pleasure which proceeds from a rational value judgement can be regarded as moral, pleasure, as such, is not a guide to action nor a standard of morality.

Whenever anyone accuses some person of being 'unfeeling,' he means that that person is just.

Self-esteem is reliance on ones power to think.

Abortion is a moral right-which should be left to the sole discretion of the woman involved; morally, nothing other than her wish in the matter is to be considered. Who can conceivably have the right to dictate to her what disposition she is to make of the functions of her body?