A rational process is a moral process. You may make an error at any step of it, with nothing to protect you but your own severity, or you may try to cheat, to fake the evidence and evade the effort of the quest - but if devotion to the truth is the hallmark of morality, then there is no greater, nobler, more heroic form of devotion than the act of a man who assumes the responsibility of thinking.

The men who are not interested in philosophy need it most urgently; they are most helplessly in its power.

The great creators - the thinkers, the artists, the scientists, the inventors - stood alone against the men of their time. Every great new thought was opposed. Every great new invention was denounced. The first motor was considered foolish. The airplane was considered impossible... But the men of unborrowed vision went ahead. They fought, they suffered and they paid. But they won.

Thinking men cannot be ruled; ambitious men do not stagnate.

I am neither foe nor friend to my brothers, but such as each of them shall deserve of me. And to earn my love, my brothers must do more than to have been born. I do not grant my love without reason, nor to any chance passer-by who may wish to claim it. I honor men with my love. But honor is a thing to be earned.

The man of authentic self-confidence is the man who relies on the judgment of his own mind. Such a man is not malleable; he may be mistaken, he may be fooled in a given instance, but he is inflexible in regard to the absolutism of reality, i.e., in seeking and demanding truth.

Any refusal to recognize reality, for any reason whatever, has disastrous consequences. There are no evil thoughts except one: the refusal to think. Don't ignore your own desires.... Don't sacrifice them. Examine their cause. There is a limit to how much you should have to bear.