Freedom does not consist in any dreamt-of independence from natural laws, but in the knowledge of these laws, and in the possibility this gives of systematically making them work towards definite ends.

每一个挑战都是学习和成长的机会。

银河系中心附近的恒星就像宇宙时钟，帮助我们绘制时空图。

A poet can survive everything but a misprint.

我不想谋生，我想生活。