Just because you are happy it does not mean that the day is perfect but that you have looked beyond its imperfections.

To improve is to change; to be perfect is to change often.

Nothing is perfect on the human stage.

There is nothing wrong in change, if it is in the right direction. To improve is to change, so to be perfect is to have changed often.

You know I'd never ask you to change. If perfect's what you're searching for, then just stay the same.

If everything was perfect, you would never learn and you would never grow.