The most beautiful flowers bloom only in the land of freedom.

"To live is the rarest thing in the world. Most people exist, that is all."

A proof tells us where to concentrate our doubts.

I'm not afraid to take a stand. Everybody come take my hand. We'll walk this road together, through the storm. Whatever weather, cold or warm.

The use of a program to prove the 4-color theorem will not change mathematics - it merely demonstrates that the theorem, a challenge for a century, is probably not important to mathematics.

作家的任务是使熟悉的事物变得陌生，使陌生的事物变得熟悉。

The secret of happiness is freedom, and the secret of freedom is courage.