当我看着这个世界时，我是悲观的，但当我看着人们时，我是乐观的。
The greatest gift is the gift of life itself.
The biggest opportunities often hide in crises—the key is whether you can discover and seize them.
The only real wealth is the wealth of the soul.
"In science, the credit goes to the man who convinces the world, not to the man to whom the idea first occurs."