The most dangerous thing in the cloud industry is to stop learning.

The only way to learn mathematics is to do mathematics.

伦理学的任务不仅是理解世界，而且是改变世界。

我们必须倾听消费者的声音，同时也要教育他们了解乳制品生产的现实。

思索寓含着判断，我们都那么偏执，以至会做出否定的判断，所以在卧室时，我们总是心存疑虑。

Those who cannot remember the past arecondemned to repeatit.

I must confess that I never could see any beauty in her. Her face is too thin; her complexion has no brilliancy; and her features are not at all handsome. Her nose wants character; there is nothing marked in its lines. Her teeth are tolerable, but not out of the common way; and as for her eyes, which have sometimes been called so fine, I could never see anything extraordinary in them.