Our affections and beliefs are wiser than we; the best that is in us is better than we can understand; for it is grounded beyond experience, and guides us, blindfold but safe, from one age on to another.
Every 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.
The traits the word 'childish' addresses are seen so often in adults that we should abolish this age-discriminatory word when it comes to criticizing behavior associated with irresponsibility and irrational thinking.