高尔夫是一个没有答案的谜题。我打了50年高尔夫，却仍然对如何打好它毫无头绪。

As in geometry the most natural way of beginning is from a mathematical point, so is the same method in observations and natural history the most genuine, simple, and instructive.

史记

The strength of a habit is proportional to the amount of reinforcement.

最好的技术是你察觉不到的技术。