Le temps est le seul capital des gens qui n'ont que leur intelligence pour fortune.
You can't change the past, but you can shape the future.
The past is always with us, for it feeds the present.
The secret of change is to focus all of your energy not on fighting the old, but on building the new.
The end of history will be a very sad time. The struggle for recognition, the willingness to risk one's life for a purely abstract goal, the worldwide ideological struggle that called forth daring, courage, imagination, and idealism, will be replaced by economic calculation, the endless solving of technical problems, environmental concerns, and the satisfaction of sophisticated consumer demands.