It is impossible to suffer without making someone pay for it; every complaint already contains revenge.

Nothing great is created suddenly, any more than a bunch of grapes or a fig. If you tell me that you desire a fig. I answer you that there must be time. Let it first blossom, then bear fruit, then ripen.

People respond in accordance to how you relate to them. If you approach them on the basis of violence, that's how they'll react. But if you say, 'We want peace, we want stability,' we can then do a lot of things that will contribute towards the progress of our society.

Working out another system to replace Newton's laws took a long time because phenomena at the atomic level were quite strange. One had to lose one's common sense in order to perceive what was happening at the atomic level.

For once you have tasted flight you will walk the earth with your eyes turned skywards, for there you have been and there you will long to return.