. . . this rage - I have never forgotten it - contained every anger, every revolt I had ever felt in my life - the way I felt when I saw the black dog hunted, the way I felt when I watched old Uncle Henry taken away to the almshouse, the way I felt whenever I had seen people or animals hurt for the pleasure or profit of others.
Our likes and dislikes exert a fateful influence upon both our own happiness and our value to others. The ancients recognized this fully, but modern education has long neglected it and is now slowly beginning to rub its eyes and awake to the significance of training the tastes. To like the wrong things may mean the ruin of body and soul, a worthless and wretched life, and all that we may well pray to be delivered from. To like the right things is an indispensable condition to health of body and mind, to contentment and happiness, and to usefulness. Likes and dislikes run powerfully into habits and even affect principles: for when we are fond of a certain pleasure it is hard for us to condemn it, even though our reason bids us do so. It is a too familiar fact that some of the most deadly foes of physical health and vigor are certain tastes, either pathological, like that for intoxicants and narcotics, or excessive, as those of the Giordano or sensualist.
Edward O. Sisson
Source: The Essentials of CharacterDeveloping tastes, The Macmillan Company, 1915