今天种下的每一棵树都是对未来的投资。

The secret of living is to own a convertible and a lake...If the sun is shining, you can rid around in your convertible and be happy...If it starts to rain, it won't spoil your day because you can just say, 'Oh, well, the rain will fill up my lake!'"”

When you do something best in life, you don’t really want to give that up – and for me it’s tennis.

教学应始终适应学生的发展阶段。

心理学必须基于直接经验，而非推论。