Mental life is a series of experiments in adaptation.

光明在书中。把书完全打开，让它发光，让它发挥作用。

"Every man is a piece of the continent, a part of the main."

Over the centuries the Indians developed sign language for communicating phenomena of interest. Programmers from different tribes (FORTRAN, LISP, ALGOL, SNOBOL, etc.) could use one that doesn't require them to carry a blackboard on their ponies.