Mathematics is not a spectator sport. You have to do it to understand it.

I'm a creative genius and there's no other way to word it.

我从不后悔生命中做过的任何事或任何选择，但我对那些没做过的事充满遗憾。

最好的农业解决方案往往是最简单的。

The state, therefore, has not existed from all eternity. There have been societies that did without it, that had no notion of the state or state power. At a certain stage of economic development, which was necessarily bound up with the split of society into classes, the state became a necessity.