If you think, you are.
You were who you think you were.
You are what you think you are.
If some of what will, can, can’t or won’t change,
you may or may not be who you think you’ll be.
You may not know some of what you think you know.
When I was a boy of fourteen,
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 he had learned in seven years.