世界不是一个令人愉快的地方，但它是我们唯一拥有的。
The world is not a pleasant place to be, but it is the only one we have.
The goal of education is not to increase the amount of knowledge but to create the possibilities for a child to invent and discover, to create men who are capable of doing new things.
The most important thing in science is not to stop questioning.
"Every story is a journey, and every journey changes the traveler."
The circumstances of the world are continually changing, and the opinions of man change also; and as government is for the living, and not for the dead, it is the living only that has any right in it.
真实的生活缺席了。我们不在这个世界上。