The art of progress is to preserve order amid change and to preserve change amid order.

If you feel lonely, it's because you're not alone with yourself enough.

我想我是不敢开心了，因为每次都会乐极生悲。

自然是用数学语言写的。

The moment the child is born, stimuli begin to play upon him.

Nobody wants to be this strenuous thing: an individual; it demands an effort.