天文学的历史是一部视野不断退却的历史。

I’ve had my best years after fifty. Age is just a number—it’s your attitude that counts. 

Science fiction is the literature of ideas, and the ideas are what matter.

Philosophy ought really to be written only as a form of poetry.

可持续增长的关键在于平衡短期收益与长期愿景。

在量子世界中，概率是唯一的现实。