In life there is no more useful faculty than to be able to put the right price on pleasures. The best of prudential maxims is “Count the cost.” The outlay of effort should be in a just relation to the return which can be reasonably reckoned upon. A given pleasure should be sought with an energy strictly in proportion to the gratification which it can actually yield,――not in proportion to a false ideal of that gratification as portrayed by the exaggerations of passion or morbid desire. When infatuation or fascination or an over-heated imagination leads the chase, horse and rider will be soon landed in the ditch. Pain and disappointment ever follow an end sought in excess of its real value. Again to quote the great dramatist, the “expense of passion” is sure to be succeeded by “a waste of shame.” The precept of education which is thus enforced is the regulation of desire by reflection and deliberation. Proceed to an appraisement, as in business affairs. Ask yourself the grounds of your desire. Is it from experience, or merely on hearsay, and from a groundless imagining of what the object might yield if attained? If it is from experience, and the tasted sweet whets anew the appetite, recall the reaction and the consequences, and if they were unpleasant, present them fully before the bar of your judgment. If imagination alone influences you, remember that you are playing the children’s game of “swapping in the dark,” and are liable to exchange solid value for dross. “Depraved affections,” observes Lord Bacon, “are false valuations.” V. The last of the five principles stated is the crown of all of them,――Make all pleasures a part of happiness. I have already explained the difference between mere pleasurable sensation and happiness in the true sense of the term. While the former belongs to man’s animal nature, the latter is intimately associated with the consciousness of Self. The power of discriminating one’s Self from the rest of the universe, and making one’s Self the subject of one’s own observation is a faculty peculiar to man alone. There is nothing which lends him more potent aid to accomplish this than his pleasurable sensations. This alone imparts to them any real value in the history of the individual or the race, and through this their value becomes inestimable. This has always been recognized as true of some of them; but the error of most teachers has been that they have refused to acknowledge the value of all pleasure to this end, the excellence of all enjoyment, when it is brought into relation to the full nature of man. Some have claimed that the charms derived from the esthetic and benevolent emotions are enough to fill our lives; others advocate intellectual joys; many preach that the religious sentiment offers all that man needs; while counselors of an opposite tendency cry, “Eat, drink, and be merry, for to-morrow ye die.”