There is a tombstone in the crypt of Westminster Abbey in England. There is a passage above: When I was young, I dreamed of changing the world. When I matured, I found that I couldn't change the world, so let's change the country. When I reached my twilight years, I had no ability to change the country. I started thinking about changing my family again. But this is impossible, if you start by changing yourself. It might all come true.
I also like this passage