人生は、一度きりの旅だ。

I stand up for what I believe in, and I don’t worry about what others think.

The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.

The best leaders listen more than they speak—understanding comes before action.

译文：学习贵在实践，而非空知;贵在有用于世，而非无用之学。反对空谈，提倡经世致用。

Agriculture is the foundation of manufacture and commerce.