Swear by your product. If you don't, no one else will.
A theory should not attempt to explain all the facts, because some of the facts are wrong.
The most beautiful things in life are free.
发现可能性的唯一方法是超越它们进入不可能。
The most important thing is to be willing to question everything.
"Humor is a way of dealing with the world, a way of coping with the world, and a way of understanding the world."