Thomas Aquinas

“ The integral parts of a virtue are the conditions the concurrence of which are necessary for virtue: and in this respect there are two integral parts of temperance, "shamefacedness," whereby one recoils from the disgrace that is contrary to temperance, and "honesty," whereby one loves the beauty of temperance. ”

“ The subjective parts of a virtue are its species: and the species of a virtue have to be differentiated according to the difference of matter or object. Now temperance is about pleasures of touch, which are of two kinds. ”

“ Now besides the movement of concupiscence, which temperance moderates and restrains, we find in the soul three movements towards a particular object. In the first place there is the movement of the will when stirred by the impulse of passion: and this movement is restrained by "continence," the effect of which is that, although a man suffer immoderate concupiscences, his will does not succumb to them. Another inward movement towards something is the movement of hope, and of the resultant daring, and this is moderated or restrained by "humility." ”