You have to fight to reach your dream. You have to sacrifice and work hard for it.

History has neither the desire nor the capacity to make men better or worse; it merely records what they have been and what they have done.

A good book should leave you slightly exhausted at the end. You live several lives while reading it.

A wealth of information creates a poverty of attention.

数学是一门活生生的学科，不断演变和发展。