Quid quid movetur ab alio movetur"(nothing moves without having been moved).

Of the irrational part of the soul again one division appears to be common to all living things, and of a vegetative nature.

Neither should we forget the mean, which at the present day is lost sight of in perverted forms of government; for many practices which appear to be democratical are the ruin of democracies, . . Those who think that all virtue is to be found in their own party principles push matters to extremes; they do not consider that disproportion destroys a state.

Humility is a flower which does not grow in everyone's garden.

A friend of everyone is a friend of no one

A vivid image compels the whole body to follow.

Knowing yourself is the beginning of all wisdom.