The young should early be trained to bear being left alone; for it is a source of happiness and peace of mind.
Arthur SchopenhauerEvery new born being indeed comes fresh and blithe into the new existence, and enjoys it as a free gift: but there is, and can be, nothing freely given. It's fresh existence is paid for by the old age and death of a worn out existence which has perished, but which contained the indestructible seed out of which the new existence has arisen: they are one being.
Arthur Schopenhauer