The study of mathematics is the indispensable basis for all intellectual and spiritual progress.
The world is a book, and those who do not travel read only one page.
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."
Stay humble, stay hungry, and never stop learning.