"A book is a conversation between the author and the reader, across time and space."
Everything you need is already inside you.
The beauty of a mathematical idea is that it can be shared and understood across cultures and time.
Mathematics knows no races or geographic boundaries; for mathematics, the cultural world is one country.
The best products come from a deep understanding of the problem, not just a desire to make something new.
家人团结,才能无往不利。