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.
If you don't begin to be a revolutionist at the age of twenty, then at fifty you will be a most impossible old fossil. If you area red revolutionary at the age of twenty, you have some chance of being up-to-date when you are forty!
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.