Mathematics knows no races or geographic boundaries; for mathematics, the cultural world is one country.
数学不知道种族或地理界限；对于数学来说，文化世界是一个国家。
Challenges are what make life interesting; overcoming them is what makes life meaningful.
To stay ahead, you must have your next idea waiting in the wings.
The mass media are anti-mediatory and intransitive. They fabricate non-communication—this is what characterizes them, if one agrees to define communication as an exchange, as a reciprocal space of a speech and a response, and thus of a responsibility.