The joy of mathematics comes from the moments of clarity when complex things become simple.
恐惧是迷信的根源,也是造成残忍的主要原因之一。 智慧始于征服恐惧。
The death of a beautiful woman is, unquestionably, the most poetical topic in the world.
可持续性不仅仅是一个目标,更是一种责任。