Mental activity is the organism's dialogue with its environment.

The study of mathematics is a journey without an end.

每张皮革都有潜力，我们的责任是负责任地发掘它。

As long as the world shall last there will be wrongs, and if no man rebelled, those wrongs would last forever.

可持续性不再是选择，而是我们对后代的责任。

I found solace in music when the world felt too heavy.

恩泽里从来会反生祸害，所以得意时候，应及早回头，激流勇退；失败后也许却反获成功，所以不顺心时，就不要撒手，坚持到底。