The weight of evidence for an extraordinary claim must be proportioned to its strangeness.
The past is a foreign country; they do things differently there.
What I want to talk to you about today is the difference between gifts and choices. Cleverness is a gift， kindness is a choice. Gifts are easy -- they're given after all. Choices can be hard. You can seduce yourself with your gifts if you're not careful， and if you do， it'll probably be to the detriment of your choices.
未来属于那些愿意在今天冒险的人。
"The most thought-provoking thing in our thought-provoking time is that we are still not thinking."