When one door closes, we often fail to see the door which always opens.
To improve is to change; to be perfect is to change often.
To exist is to change, to change is to mature, to mature is to go on creating oneself endlessly.
You can’t go back and change the beginning, but you can start where you are and change the ending.
The art of life lies in a constant readjustment to our surroundings.
Progress is impossible without change, and those who cannot change their minds cannot change anything.