What wisdom can you find that is greater than kindness?
The real measure of success is the number of experiments that can be crowded into 24 hours.
In mathematics, as in life, the most elegant solutions often arise from a deep understanding of the problem.
不要为那些不愿在你身上花费时间的人而浪费你的时间。
——1963年6月25日在西德市政厅柏林墙前的演说