A mathematical proof is a poem written in the language of logic.
You are beautiful no matter what they say.
keep fit and don't lose your nerve.
盖亚假说是为那些喜欢散步或只是站着凝视的人准备的,他们思考地球及其承载的生命,并推测人类活动的后果。
在物理学中,真相很少是完全清晰的,在量子力学中尤其如此。
对自由民主最严重的威胁来自内部,来自制度的衰败和对它们的信任的丧失。
Some of my best leading men have been dogs and horses.