The Langlands program is a reflection of the interconnectedness of all mathematical disciplines.
The land teaches patience; the market teaches agility.
If there's a book that you want to read, but it hasn't been written yet, then you must write it.
我不擅长艺术，所以我想我最好做个艺术家。
The state of nature has a law of nature to govern it, which obliges every one: and reason, which is that law, teaches all mankind, who will but consult it, that... no one ought to harm another in his life, health, liberty, or possessions.