We all change, 
When you think about it,
We're all different people, 
All through our lives,
And that's ok, that's good,
You've got to keep moving,
So long as you remember, 
All the people you used to be.
I will not forget one line of this,
Not one day, I swear.
I will always remember,
When The Doctor was me.
- Matt Smith (the 11th Doctor)