A mathematician's work is mostly a solitary pursuit, but it builds on the work of many others.
Diversity isn't just a nice-to-have, it's a must-have for any organisation that wants to thrive in today's world.
社交媒体可能是一把双刃剑,但专注于好的部分让它变得值得。
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."