译文：如果志向不坚毅，思想境界不开阔，沉溺于世俗私情，碌碌无为，永远混杂在平庸的人群之后，就会难免沦落到下流社会，成为没有教养，没有出息的人。

How sharper than a serpent's tooth is to have a thankless child.

The less secure a man is, the more likely he is to have extreme prejudice.

A good mathematician is someone who can see analogies between theorems. A great mathematician is someone who can see analogies between analogies.

The magical thing about this network is not just that it collapses distance and makes everyone your neighbor. It also dramatically increases the number of brilliant minds we can have working together on the same problem--and that scales up the rate of innovation to a staggering degree.

智者知道如何拥有，而不仅仅知道如何获得。

We are so accustomed to disguise ourselves to others that in the end we become disguised to ourselves.