All change...
Change begets change. Nothing propagates so fast. If a man habituated to a narrow circle of cares and pleasures, out of which he seldom travels, step beyond it, though for never so brief a space, his departure from the monotonous scene on which he has been an actor of importance would seem to be the signal for instant confusion...The mine which Time has slowly dug beneath familiar objects is sprung in an instant; and what was rock before, becomes but sand and dust - Charles Dickens
There is something in the pang of change More than the heart can bear, Unhappiness remembering happiness. - Euripedes
There is a certain relief in change, even though it be from bad to worse; as I have found in travelling in a stage-coach, that it is often a comfort to shift one's position and be bruised in a new place. - Washington Irving
It is change, continuing change, inevitable change, that is the dominant factor in society today. No sensible decision can be made any longer without taking into account not only the world as it is, but the world as it will be...This, in turn, means that our statesmen, our businessmen, our everyman must take on a science fictional way of thinking. - Isaac Asimov
To remain young one must change. The perpetual campus hero is not a young man but an old boy. - Alexander Chase
Quotes above courtesy of the website http://www.annabelle.net/topics/change.php