Do nothing, say nothing, and be nothing, and you’ll never be criticised.
– Elbert Hubbard
The above is often misattributed as the admittedly more poetic:
There is only one way to avoid criticism: do nothing, say nothing, and be nothing.
Speak your mind even if your voice shakes.
– Maggie Kuhn
I think it’s more poetic as (this is also given in HPMOR chapter 18):
Speak the truth even if your voice trembles.
The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man.
– George Bernard Shaw
I must study politics and war that my sons may have liberty to study mathematics and philosophy. My sons ought to study mathematics and philosophy, geography, natural history, naval architecture, navigation, commerce, and agriculture, in order to give their children a right to study painting, poetry, music, architecture, statuary, tapestry, and porcelain.
– John Adams
Some failure in life is inevitable. It is impossible to live without failing at something, unless you live so cautiously that you might as well not have lived at all – in which case, you fail by default.
– J. K. Rowling
When I started writing I thought if I proved X was a stupid thing to do people would stop doing X. I was wrong.
– Bill James