Time is not a thing， thus we can neither waste nor save it； it is always with us.
时间并非实物，因此我们既无法浪费也无法节省；它始终与我们同在。
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.
Anyone who recovers from an addiction has my respect.
The most beautiful thing in mathematics is the simplicity of the ideas behind the complexity.