The mathematician does not study pure mathematics because it is useful; he studies it because he delights in it and he delights in it because it is beautiful.
我们是共同的历史,共同的书。我们在品味或经验上不是被拥有或一夫一妻的。
The history of mathematics is a testament to the ingenuity and creativity of the human mind.
The beauty of life lies in the details.