The mastery of work is due to diligence but not to play, and success is achieved by thinking and ruined by casualness.

If you have perseverance, why bother to sleep from the third watch to the fifth watch? The most useless thing is to be exposed to the cold for ten days in one day.

Mount Tai does not allow soil, so it can become as big as it is; rivers and seas do not accept small streams, so it can become deep.

If you persevere, the rotten wood will not be broken; if you persevere, the gold and stone can be carved.

As long as you persevere and gain more knowledge, you will eventually discover its secrets. —— Yang Zhenning