The difference between theory and practice is that in theory, there is no difference between theory and practice, but in practice, there is.
理论和实践的区别在于,理论上,理论和实践没有区别,但在实践中,却有区别。
你无法预测,但你可以准备。
他就像一个在公园里无忧无虑漫步的人一样,好像穿着一件隐形的外套,可以屏蔽监狱里的纷扰。
The goal of mathematics is to make the simple complicated, and the complicated simple.