All men are immortal， but those who are not educated are immortal in a lower and less enviable sense.

心理学家必须是一个严格的实证主义者。

Sustainability is not just a trend, it's a responsibility we owe to the next generation.

释义：人的一生在于勤奋，不努力探索，哪会有收获? 

A sense of responsibility is the mark of a noble character.

The materials I use are witnesses of time.

Inflation is a very bold idea, but it seems to be the only way to explain the observed features of the universe.

The investor's chief problem - and even his worst enemy - is likely to be himself.