Reason is a light that God has kindled in the soul.

Excellence is an art won by training and habituation. We do not act rightly because we have virtue or excellence, but we rather have those because we have acted rightly. We are what we repeatedly do. Excellence, then, is not an act but a habit.

For those who possess and can wield arms are in a position to decide whether the constitution is to continue or not

The activity of happiness must occupy an entire lifetime; for one swallow does not a summer make.

Happiness involves engagement in activities that promote one's highest potentials.

Also, that which is desirable in itself is more desirable than what is desirable per accidens.

Equality is of two kinds, numerical and proportional; by the first I mean sameness of equality in number or size; by the second, equality of ratios.