We are all idealists in that we are ever discontented with the present state of the Ego and the World.
Civil movements and riots are as old as human civilization. Long before Twitter was created, mobilization of the discontented was mouth-to-mouth, or even by 'smoke signals' to gather the uprising against established political power.
We are never more discontented with others than when we are discontented with ourselves.
It was reading Hamlet that ruined the concept of authenticity for me, not because Hamlet lacked existentialist credentials himself - indeed, as an earlier discontented Dane, he could be said to have laid the ground for Kierkegaard - but because the line 'to thine own self be true' was spoken by that humourless old ninny, Polonius.
In every team there are those who are discontented.
Man is insatiable for power; he is infantile in his desires and, always discontented with what he has, loves only what he has not. People complain of the despotism of princes; they ought to complain of the despotism of man.
The discontented believe that their regrets are about the past.
The Jews' greatest contribution to history is dissatisfaction! We're a nation born to be discontented. Whatever exists we believe can be changed for the better.
As humans, we're such a discontented species. We're always trying to further ourselves, and you get all the way to the moon, and then it's just discontent. You want to go to Mars.