I must study politics and war that my sons may have liberty to study mathematics and philosophy.

找出一个人最适合做的并保障他(她)能够去做的机遇环境，是通往幸福的关键。

Believe in yourself, you can do it.

Psychology should focus on how the mind functions to solve practical problems, not just its abstract structure.

造纸业有着丰富的历史，但我们必须始终向前看。