Pleasure is satisfaction derived from the things and persons outside us. Happiness is satisfaction derived from the core of deepest being inside us. Because we get our pleasures through the five senses, they are more exciting and are sharper, more vivid, than the diffused self-induced thoughts and feelings which bring us happiness. In short, pleasure is of the body whereas something quite immaterial and impalpable is the source of our happiness. This is not to say that all pleasures are to be ascetically rejected, but that whereas we are helplessly dependent for them on some object or some person, we are dependent only on ourselves for happiness.
-- Perspectives > Chapter 24: The Peace within You > # 38