Thinking is behavior. The muscular habits learned in overt speech are responsible for implicit or internal speech (thought).

Great engineering is invisible—it just works seamlessly.

凡是做学问，必须从各个方面都理解透彻，还要更进一步深入理解内在的道理。

我并不完美，但我每天都在努力变得比昨天更好。

The act of writing is an act of optimism. You would not take the trouble to do it if you felt it didn't matter.

He that falls in love with himself, will have no rivals.

人真正的故乡是童年。