If you can’t change with the times, experience is more a handicap than a help.
There is a kind of magicness about going far away and then coming back all changed.
Everyone wants to change the world, but nobody wants to change himself.
– It all just disappears, doesn't it? Everything you are, gone in a moment, like breath on a mirror. Any moment now... He's a-comin'.
– The Doctor.
– You. You are the Doctor.
– Yep, and I always will be. But times change, and so must I.
– Amelia!
– Who's Amelia?
– The first face this face saw. We all change. When you think about it, we're all different people all through our lives, and that's okay, that's good, you gotta keep moving, so long as you remember all the people that 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.
There are no ifs in this world. No one can change what’s already happened.
One’s life is promised inexhaustible possibilities. The people around them will change them and shape their lives.
Every human has regrets, has things they’d like to go back and change.
As long as you’re human, there will always come a point where you wish you could do things differently.
Even the darkest subject can suddenly become brighter!