——2000年10月18日出席西雅图一次会议时的发言
Mathematical intuition is like a muscle - it grows stronger with exercise.
Re graphics: A picture is worth 10K words - but only those to describe the picture. Hardly any sets of 10K words can be adequately described with pictures.
The division of labour， so far as it can be introduced， occasions， in every art， a proportionable increase of the productive powers of labour.