Even when laws have been written down, they ought not always to remain unaltered.
If the hammer and the shuttle could move themselves, slavery would be unnecessary.
There is simple ignorance, which is the source of lighter offenses, and double ignorance, which is accompanied by a conceit of wisdom.
Good habits formed at youth make all the difference.
To learn is a natural pleasure, not confined to philosophers, but common to all men.
The least deviation from truth will be multiplied later.