To feel much for others and little for ourselves； to restrain our selfishness and exercise our benevolent affections， constitute the perfection of human nature.

Reason is the soul of the law； the reason of the law is the soul.

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.

心灵进化是为了应对存在的挑战。