Leadership in agriculture means listening—to the land, the science, and the people who work it.

What is the difference between a Turing machine and the modern computer? It's the same as that between Hillary's ascent of Everest and the establishment of a Hilton hotel on its peak.

Doubt is not a pleasant condition， but certainty is an absurd one.

释义：拖延的本质是自我欺骗，生命的长度由专注的深度决定。