Nothing created has ever been able to fill the heart of man. God alone can fill it infinitely.
Thomas AquinasNow this relaxation of the mind from work consists on playful words or deeds. Therefore it becomes a wise and virtuous man to have recourse to such things at times.
Thomas AquinasWhen the devil is called the god of this world, it is not because he made it, but because we serve him with our worldliness.
Thomas AquinasIt is requisite for the relaxation of the mind that we make use, from time to time, of playful deeds and jokes.
Thomas AquinasGood and evil are essential differences of the act of the will. For good and evil pertain essentially to the will; just as truth and falsehood pertain to the reason, the act of which is distinguished essentially by the difference of truth and falsehood (according as we say that an opinion is true or false.) Consequently, good and evil volition are acts differing in species.
Thomas Aquinas