Even the poorest street is rich with people on it and even the richest street is poor without people on it!

Anything can happen; this is the very rule of this universe! The best defence against this rule is this: Don't panic!

There must be a marsh in the brains of these men or there would not be so many frogs of wrong ideas gathered in their heads.

Victory is a good wine; defeat is a good university!

If man can fly, it won't be something extraordinary! But if man can become immortal, now that will be extraordinary!

To fly up to the sky and watch the earth is beautiful; to fly down to the earth and watch the sky is even more beautiful!

Every unhappy genius dreams to be in the place of a happy fool.