最好的产品是那些解决实际问题的产品。

True art comes from inner sincerity.

It’s on the strength of observation and reflection that one finds a way. So we must dig and delve unceasingly.

Life is not what one lived, but what one remembers and how one remembers it in order to recount it.

研究不仅仅是回答问题，还要提出正确的问题。