Every challenge is an opportunity to learn and grow.

To imagine is to practice freedom.

When I approach a child, he inspires in me two sentiments; tenderness for what he is, and respect for what he may become.

不要试图去做一个成功的人，要努力成为一个有价值的人。

过去是一种幻觉，未来是一个谜，现在是一份礼物。