出自《魏源集·默觚下·治篇五》。三代以上，天都跟現(xiàn)在的天不一樣，地都跟現(xiàn)在的地不一樣，人也跟現(xiàn)在的人不一樣，物也和現(xiàn)在的物不一樣。
我們不是從祖先那里繼承了地球；我們是從子孫那里借來的——這一信念塑造了我們所做的一切。
"I don't really care what people think about me. I just focus on my job."
The scientific study of behavior must be based on objective, measurable data.
"The only limit to our realization of tomorrow will be our doubts of today."