It's not that I don't suffer, it's that I know the unimportance of suffering. I know that pain is to be fought and thrown aside, not to be accepted as part of one's soul and as a permanent scar across one's view of existence.

Congress shall make no law abridging the freedom of production and trade.

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.

Nobody has ever given a reason why men should be their brother's keepers.

To achieve, you need thought. You have to know what you are doing and that's real power.

The causes of illusions are not pretty to discover. They're either vicious or tragic.

Happiness is not to be achieved at the command of emotional whims.