I’m not afraid to fail, I’m afraid not to try.
我不害怕失败,我害怕不去尝试。
The general will is always right, but the judgment which guides it is not always enlightened.
I'm rich enough to be able to afford to be honest.
以德行来排列位次,按官职来处理政事,按照劳绩来决定赏赐,衡量功勋二分给俸禄。 
In our reasonings concerning matter of fact, there are all imaginable degrees of assurance, from the highest certainty to the lowest species of moral evidence.
The definition of a good mathematical problem is the mathematics it generates rather than the problem itself.