The only limit to our realization of tomorrow is our doubts of today.

亲兄弟不和睦，家产像瓜一样被切开；士大夫爱钱，不读书却追逐钱财。

关键在于要有一颗爱真理的心灵，随时随地碰见真理，就把它吸收进来。

In the end, we are all alone, and that is the fundamental condition of human existence.

技术应该为农民服务，而不是反过来。