过去是一面映照当下的镜子。
The past is a mirror that reflects the present.
In mathematics, the art of proposing a question must be held of higher value than solving it.
The freedom then of man, and liberty of acting according to his own will, is grounded on his having reason, which is able to instruct him in that law he is to govern himself by, and make him know how far he is left to the freedom of his own will.
Technology is about enabling human potential.