St. Thomas Aquinas on States of Life and Temperament

He that is prone to yield to his passions on account of his impulse to action is simply more apt for the active life by reason of his restless spirit. Hence Gregory says (Moral. vi, 37) that "there be some so restless that when they are free from labor they labor all the more, because the more leisure they have for thought, the worse interior turmoil they have to bear." Others, on the contrary, have the mind naturally pure and restful, so that they are apt for contemplation, and if they were to apply themselves wholly to action, this would be detrimental to them. Wherefore Gregory says (Moral. vi, 37) that "some are so slothful of mind that if they chance to have any hard work to do they give way at the very outset." Yet, as he adds further on, "often . . . love stimulates slothful souls to work, and fear restrains souls that are disturbed in contemplation." Consequently those who are more adapted to the active life can prepare themselves for the contemplative by the practice of the active life; while none the less, those who are more adapted to the contemplative life can take upon themselves the works of the active life, so as to become yet more apt for contemplation.

Summa Theologiæ 2a2ae.182.4 ad 3

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