You can't change your elephant by direct force, but you can train it over time.

I believe that the most important single thing, beyond discipline and creativity, is daring to dare.

Tennis is a mental game. Everyone is fit, everyone hits great forehands and backhands – it’s the upstairs that counts.

真正的强大是承认自己的软弱。

我唯一能做的就是写作。其他一切都让我感到无聊。