However that may be, youth is the period of unrest, and age of repose; and from that very circumstance, the relative degree of pleasure belonging to each may be inferred. The child stretches out its little hands in the eager desire to seize all the pretty things that meet its sight, charmed by the world because all its senses are still so young and fresh. Much the same thing happens with the youth, and he displays greater energy in his quest. He, too, is charmed by all the pretty things and the many pleasing shapes that surround him; and forthwith his imagination conjures up pleasures which the world can never realize. So he is filled with an ardent desire for he knows not what delights--robbing him of all rest and making happiness impossible. But when old age is reached, all this is over and done with, partly because the blood runs cooler and the senses are no longer so easily allured; partly because experience has shown the true value of things and the futility of pleasure, whereby illusion has been gradually dispelled, and the strange fancies and prejudices which previously concealed or distorted a free and true view of the world, have been dissipated and put to flight; with the result that a man can now get a juster and clearer view, and see things as they are, and also in a measure attain more or less insight into the nullity of all things on this earth. It is this that gives almost every old man, no matter how ordinary his faculties may be, a certain tincture of wisdom, which distinguishes him from the young. But the chief result of all this change is the peace of mind that ensues--a great element in happiness, and, in fact, the condition and essence of it. While the young man fancies that there is a vast amount of good things in the world, if he could only come at them, the old man is steeped in the truth of the Preacher's words, that _all things are vanity_--knowing that, however gilded the shell, the nut is hollow.