试图独自生活的人不会成功。如果他的心不回应另一颗心，他的心就会枯萎。如果他只听到自己思想的回声而找不到其他灵感，他的思想就会退缩。
The person who tries to live alone will not succeed as a human being. His heart withers if it does not answer another heart. His mind shrinks away if he hears only the echoes of his own thoughts and finds no other inspiration.
出自《抱朴子·博喻》。登高的人，要警惕的是爬高了会摔下来，渡深水的人，往往是因为船太重才出了祸。要适可而止，不要过于贪婪。
选择最好的生活，因为习惯会使它愉快。
You can’t lead people if they don’t believe you care about them.
Challenges are opportunities in disguise—embrace them.
数学家是将咖啡转化为定理的装置。