The beauty of mathematics is that it is both an art and a science.
幸福就像一只蝴蝶,当你追逐它时,总是抓不到,但如果你安静地坐下来,它可能会落在你身上。
I therefore have decided to read only the writings of men who have been executed or have risked their lives in some way.
True leaders must dare to take responsibility and make decisions.