There is no moment without some duty.

Justice consists in doing no injury to men; decency in giving them no offense.

Now in regard to trades and other means of livelihood, which ones are to be considered becoming to a gentleman and which ones are vulgar, we have been taught, in general, as follows. First, those means of livelihood are rejected as undesirable which incur people's ill-will, as those of tax-gatherers and usurers. Unbecoming to a gentleman, too, and vulgar are the means of livelihood of all hired workmen whom we pay for mere manual labour, not for artistic skill; for in their case the very wage they receive is a pledge of their slavery.

In nothing do men more nearly approach the gods than in giving health to men.

Ability without honor is useless.

Physicians, when the cause of disease is discovered, consider that the cure is discovered.

Summer lasts not for ever; seasons succeed each other.