Learning without thought is labour lost; thought without learning is perilous.

The gentleman has nine cares. In seeing he is careful to see clearly; in hearing he is careful to hear distinctly; in his looks he is careful to be kind, in his manner to be respectful, in his words to be sincere, in his work to be diligent. When in doubt he is careful to ask for information; when angry he has a care for the consequences; and when he sees a chance for gain, he thinks carefully whether the pursuits of it would be right.

You judge yourself by what you think you can achieve, others judge you by what have achieved.

Exemplary people concern themselves with virtue, small people concern themselves with territory. The ruling class thinks of punishment, the lower classes hope for benevolence.

To think twice is quite enough.

Think no vice so small that you may commit it, and no virtue so small that you may over look it.

He who is harmony with Nature hits the mark without effort and apprehends the truth without thinking.

Let our reason, and not our senses, be the rule of our conduct; for reason will teach us to think wisely, to speak prudently, and to behave worthily.

To learn without thinking is labour in vain, to think without learning is desolation.