Our problem is not that we aim too high and miss, but that we aim too low and hit.

The wise man knows of all things, as far as possible, although he has no knowledge of each of them in detail

Our virtues are voluntary (and in fact we are in a sense ourselves partly the cause of our moral dispositions, and it is our having a certain character that makes us set up an end of a certain kind), it follows that our vices are voluntary also; they are voluntary in the same manner as our virtues.

And, speaking generally, passion seems not to be amenable to reason, but only to force.

The soul of animals is characterized by two faculties, (a) the faculty of discrimination which is the work of thought and sense, and (b) the faculty of originating local movement.

It is our actions and the soul's active exercise of its functions that we posit (as being Happiness).

Whatsoever that be within us that feels, thinks, desires, and animates, is something celestial, divine, and, consequently, imperishable.