Thomas Aquinas,
Summa Theologiae — Question 155 - OF CONTINENCE…
“ The will is more akin to the reason than the concupiscible power is. Wherefore the good of reason---on account of which virtue is praised by the very fact that it reaches not only to the will but also to the concupiscible power, as happens in the temperate man---is shown to be greater than if it reach only to the will, as in the case of one who is continent. ”
