He knew a lot more than most kids his age.

He did not know his age and no one had called him good before.

It is hard to know exactly the age and number of children who work.

You know, it's just possible she could have a boy your age now.

Or was that only because Wall knew her true age?

Like many of the boys, he did not know his age.

"Simply because it is better for them not to know your age."

"And I have told them that you wish to know my age."

You asked: How do we know the age of the universe?

It is full of promise; but I should like to know his age.