We have come to see how great is the unexplored.

Men prosper or fail, survive or perish in proportion to the degree of their rationality.

This was the great clarity of being beyond emotion, after the reward of having felt everything one could feel.

Morality is a code of black and white. When and if men attempt a compromise, it is obvious which side will necessarily lose and which will necessarily profit.

Men have died in torture chambers, on the stake, in concentration camps, in front of firing squads, rather than renounce their convictions. The appeaser renounces his under the pressure of a frown on a vacant face.

A leash is a rope with a noose at both ends.

There is no such thing as duty. If you know that a thing is right, you want to do it. If you don't want to do it - it isn't right. If it's right and you don't want to do it - you don't know what right is and you're not a man.