The consequences of this problem make themselves felt in bookshops. When you go to a large bookshop and look at the self-help sections, as I sometimes do -- if you analyze self-help book sproduced in the world today, there are basically two kinds. The first kind tells you, "You can do it! You can make it! Anything's possible!" The other kind tells you how to cope with what we politely call "low self-esteem," or impolitely call, "feeling very bad about yourself."

Philosophy is the discipline that forces us to confront the questions we would most like to avoid.

The first step towards philosophy is incredulity.

学习数学的唯一方法就是做数学。

凡事都有困难应考虑周详，行动上要顾虑缺失，想一想自己的行为，都有许多差错。