I do not know what I may appear to the world， but to myself I seem to have been only like a boy playing on the sea-shore， and diverting myself in now and then finding a smoother pebble or a prettier shell than ordinary， whilst the great ocean of truth lay all undiscovered before me.

Writing is a dialogue with oneself.

The most important property of a program is whether it accomplishes the intention of its user.

I always believe that as long as you persist, you will definitely succeed.