The concept of a multiverse arises naturally from the inflationary model of the universe.

"Home is not a place, it's a feeling."

Inflation is the mechanism that can make the universe flat, homogeneous, and isotropic.

数学不是一项观赏性运动。

I hold every man a debtor to his profession； from the which as men of course do seek to receive countenance and profit， so ought they of duty to endeavor themselves by way of amends to be a help and ornament thereunto.

Learning involves the gradual adjustment of connection strengths between units in a network.

最好的想法往往来自最意想不到的地方。

What's terrible is to pretend that second-rate is first-rate. To pretend that you don't need love when you do; or you like your work when you know quite well you're capable of better.