When I was a boy of 14, my father was so ignorant I could hardly stand to have the old man around. But when I got to be 21, I was astonished at how much the old man had learned in seven years.
The wisdom in Twain’s words says a lot about how it is us that really matters.
Change or growth is mostly with us and not others. Particularly on the scale of a human life, our external environment and the associated knowledge do not change as much as we do.
When noticing how things have changed, take a closer look. Is the change result of our own understanding of things? Or is it the external world? Chances are it is us. Just like the example once you noticed something, it is everywhere.
We have so much potential waiting to be tapped. Do not mistaken that learning stop after school. You will be surprised, as Twain humorously indicated, how much learning could still happen.
What about yourself are you most happy with? Which to develop further? Any lessons you would like to share?