过去总是在现在中存在。
"The past is always present in the present."
The greatest happiness for the laborer consists in having an abundant supply of the necessaries of life.
实现明天的唯一限制是我们今天的疑虑。
唯一比被人议论更糟糕的事是没人议论你。
Innovation is the key to solving the world's most pressing problems.