If one only wished to be happy, this could be easily accomplished; but we wish to be happier than other people, and this is always difficult, for we believe others to be happier than they are.

Success is about being happy with what you're doing.

凡是合乎理性的都是现实的，凡是现实的都是合乎理性的。

对我来说，绘画与色彩无关；我感兴趣的是光的质感。

自由始终是并且仅仅是持不同思想者的自由。