You are never too old to set another goal or to dream a new dream.
求知若飢，虚心若愚。
我年青时以为金钱至上，而今年事已迈，发现果真如此。
The greatest economic transformations often begin with small, deliberate steps.
The best way to learn mathematics is to do mathematics.
The best fertilizer for any farm is the footsteps of the farmer.