在网球中，心态是最重要的。

Your work will be endless， but your time is finite. You cannot limit the work so you must limit your time. Hours are the only thing you can manage.

A hundred times every day I remind myself that my inner and outer life are based on the labors of other men, living and dead, and that I must exert myself in order to give in the same measure as I have received and am still receiving...

写作是我唯一向自己解释自己生活的方式。