The end of all our exploring will be to arrive where we started and know the place for the first time.
I have lived with the prospect of an early death for the last 49 years. I'm not afraid of death, but I'm in no hurry to die. I have so much I want to do first.
在量子场论中，真空并非空无一物，而是充满了虚粒子。
The past is a foreign country; they do things differently there.
The food system must evolve to meet the needs of a growing population.
愚蠢的时间由时钟衡量，但智慧的时间：没有时钟可以衡量。