"Men and women grow older in this world of ours, and as the years advance they change. Of all the changes that they undergo those of their moral natures are the most painful to watch. The boy changes into the man, and there is something lost which never seems to come back again. It is like the first glow of the morning that passes away — like the bloom on the blossom that never is restored. Your grown-up boy is wise in bad things which he used to know nothing about. His life no longer sounds with a perfectly clear ring, or shines with a perfectly white lustre. He is no longer unspotted."