Experience without theory is blind, but theory without experience is mere intellectual play.

It ain't over 'til it's over.

I will indulge my sorrows, and give way to all the pangs and fury of despair.

I may not be better than other people, but at least I'm different.

Courage is grace under pressure.

The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.

Any fool can criticize, condemn, and complain but it takes character and self control to be understanding and forgiving.

A difference of opinion is what makes horse racing and missionaries.

I don't try to imagine a personal god; it suffices to stand in awe at the structure of the world, insofar as it allows our inadequate senses to appreciate it.

I fully realize that no wealth or position can long endure, unless built upon truth and justice; therefore, I will engage in no transaction which does not benefit all whom it affects.

I just want to retire before I go senile because if I don't retire before I go senile, then I'll do more damage than good at that point.

The mind that finds its way to wild places is the poet's; but the mind that never finds its way back is the lunatic's.

Sanity is a madness put to good uses.

Ladies who play with fire must remember that smoke gets in their eyes.

Terrorism is the tactic of demanding the impossible, and demanding it at gunpoint.

The more you like yourself, the less you are like anyone else, which makes you unique.

To turn really interesting ideas and fledgling technologies into a company that can continue to innovate for years, it requires a lot of disciplines.

Never accept a drink from a urologist.

A man can do what he wants, but not want what he wants.

There is an eloquence in true enthusiasm.

Radical simply means 'grasping things at the root'.