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

真正的幸福首先来自于自我享受，其次来自于与少数精选伙伴的友谊和交谈。

The most dangerous thing is to become complacent with past success.

The mind is divided into parts that sometimes conflict. Like a rider on the back of an elephant, the conscious, reasoning part of the mind has only limited control over the automatic, emotional part.

物理定律是普适的，在像银河系中心这样的极端环境中测试它们是至关重要的。

创新是将变化视为机会的能力，而不是威胁。

我们实现明天的唯一限制将是我们今天的怀疑。

我是那种精神不正常的人。