一流智力的检验标准是能够在头脑中同时持有两种相反的想法,并且仍然保持正常运作的能力。
The test of a first-rate intelligence is the ability to hold two opposed ideas in mind at the same time and still retain the ability to function.
我们教授一门学科不是为了培养关于该学科的小型活图书馆,而是让学生自己学会数学思考。
The important thing in life is not victory but combat; it is not to have vanquished but to have fought well.