If the whole world depends on today's youth, I can't see the world lasting another 100 years.

Awareness of ignorance is the beginning of wisdom.

I prefer to be refuted than to refute, for it is a greater good for oneself to be freed from the greatest evil than to free another.

Be as you wish to seem.

When you want wisdom and insight as badly as you want to breathe, it is then you shall have it.

Let he who would move the world, first complete an environmental impact assessment and a 90-day public comment period.

You are wrong, sir, if you think that a man who is any good at all should take into account the risk of life or death; he should look to this only in his actions, whether what he does is right or wrong, whether he is acting like a good or a bad man.