When I was One,
I had just begun.
When I was Two,
I was nearly new.
When I was Three,
I was hardly Me.
When I was Four,
I was not much more.
When I was Five,
I was just alive.

But now I am Six, I’m as clever as clever.
So I think I’ll be six now for ever and ever.

A. A. Milne (1882-1956) English poet and playwright [Alan Alexander Milne]

Now We Are Six, “The End” (1927)
    (Source)