我们知识的边界就是我们想象力的前沿。
To make people free is the aim of art.
Innovation in energy must balance environmental responsibility with economic viability.
Time is a thief, but memory is a liar.
The world must be set in order. The time has come when ethics must be dealt with by science, and never again by mere opinion.
当我们无法谈论某件事时,它就变得危险。