Wisdom is the wage of Experience, and its price

An Anglican bishop from 1100 AD has written on his tomb in Westminster Abbey:
When I was young a free and my imagination had no limits, I dreamed of changing the world. As I grew older and wiser, I discovered the world would not change, so I shortened my sights somewhat and decided to change only my country.
But it, too, seemed immovable.
As I grew into my twilight years, in one last desperate attempt, I settled for changing only my family and those closest to me, but alas, they would have none of it.
And now as I lie on my deathbed, I suddenly realize: If I had only changed my self first, then by example I would have changed my family.
From their inspiration and encouragement, I would then have been able to better my country and, who knows, I may have even changed the world.