I'm not afraid to die, I'm afraid of not trying.

I'm not here to be liked. I'm here to be myself.

解释：顺应时代的潮流就会昌盛，背离时代的方向便会走向灭亡。

生命是一首未完成的诗。

动力学的方程在用变分法的语言表达时是完全的。

If you don't fail at least 90 percent of the time, you're not aiming high enough.

风俗的专制无处不是人类进步的阻碍。