We don't just mine coal, we power the nation.
The best discoveries come from asking the right questions.
适合从事任何特定行业的人，如果没有与他一起工作或在他之上的人的帮助和指导，就无法理解该行业的科学。
A play is not an essay, nor should it be treated as such.
The most beautiful as well as the most ugly inclinations of man are not part of a fixed biologically given nature, but result from the social process which creates man.
听到别人指出自己的过错，就感到高兴。
Three grand essentials to happiness in this life are something to do, something to love, and something to hope for.