Things the old should always bear in mind.
1. The young (unlike their elderly selves) do not desire a quiet life.
2. In the unimproveable words of William Blake, "If a fool would persist in his folly he would become wise."
3, Nobody pays any attention to a moralizing greybeard anyway.
If I had lived my life along lines my father had approved I would have been- by now- a very twisted, unhappy, bitter old man. I did some very risky things in my youth and middle-age and I'm "no deid yet". Sometimes my memory fails me and I talk as if I was always the cautious, world-weary old creature I am now. And I wasn't. Youth is for making mistakes in and falling over and getting up again. This is how we learn- by taking knocks while we're still resilient. The old- who have done all these things themselves (or should have done)- need only offer a helping hand and a measure of understanding. If they feel the need to salt this with advice they should keep it brief and not take it personally when they're ignored.