战争是一种精神现象。

数学的美在于它揭示隐藏的对称性和真理的能力。

I don't care if you're black, white, straight, bisexual, gay, lesbian, short, tall, fat, skinny, rich or poor. If you're nice to me, I'll be nice to you. Simple as that.

质量从来不是偶然的，它总是智慧努力的结果。

将每一个困难分解为尽可能多的部分，以便更好地解决它。