The key to artificial intelligence is the representation of knowledge.

我不在乎排名。我在乎的是打好比赛。

When you do something best in life, you don’t really want to give that up – and for me it’s tennis.

切勿对已经敞开心胸的人闭上双唇。

释义：人际关系如果疏远了，就难以恢复；事情如果积累多了，就难以解决。说明了做人要重视人际关系的互动。