The people who think it a shame when any thing goes wrong—who rush to the conclusion that the evil could and ought to have been prevented, are those who, in the long run, do most to make the world better.
 John Stuart Mill, Considerations on Representative Government (1861). copy citation

Context

“In itself it is the foundation of the best hopes for the general improvement of mankind. It has been acutely remarked that whenever any thing goes amiss, the habitual impulse of French people is to say, "Il faut de la patience;" and of English people, "What a shame!" The people who think it a shame when any thing goes wrong—who rush to the conclusion that the evil could and ought to have been prevented, are those who, in the long run, do most to make the world better. If the desires are low placed, if they extend to little beyond physical comfort, and the show of riches, the immediate results of the energy will not be much more than the continual extension of man's power over material objects;” source