People demand freedom of speech as a compensation for the freedom of thought which they seldom use.

Success is going from failure to failure without losing enthusiasm.

"The world is full of magic things, patiently waiting for our senses to grow sharper."

乐观是一种可以学习的技能。

要信守承诺。

生活本身没有任何价值，它的价值在于怎样使用它。