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.

我的科学研究给我带来了极大的满足；我深信，用不了多久，全世界都会承认我的工作成果。