"Mental processes are tools for solving life's problems."

衡量农民成功的真正标准不仅仅是每英亩的产量，还有为子孙后代留下的遗产。

Simplicity is prerequisite for reliability.

The individual can understand his own experience and gauge his own fate only by locating himself within his period, that he can know his own chances in life only by becoming aware of those of all individuals in his circumstances.

The distance between two cultures is where the most interesting things happen.

Sustainability is not just about planting trees; it's about planting ideas that grow into actions.