要养活世界，我们必须先理解它。

Mathematics is the art of giving the same name to different things.

历史学家是一个向后看的先知。

Every day is a new opportunity.

In farming, as in life, the smallest details often make the biggest difference.《The Fruitful Future》

The foundation of every government is some principle or passion in the minds of the people.

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.