The world will not be destroyed by those who do evil, but by those who watch them without doing anything.

The world is a dangerous place, not because of those who do evil, but because of those who look on and do nothing.

The world will by no means perish by a diminution in the number of evil men.

As muddy water is best cleared by leaving it alone, it could be argued that those who sit quietly and do nothing are making one of the best possible contributions to a world in turmoil.

A civilization is not destroyed by wicked people; it is not necessary that people be wicked but only that they be spineless.

The less you do, the more you can see.
Observe and learn.
Watch the world.

El mundo de ningún modo se hundirá porque haya menos hombres malos.

Bad men need nothing more to compass their ends, than that good men should look on and do nothing.

The world is a dangerous place to live, not because of the people who are evil, but because of the people who don't do anything about it.

look at the world with quiet eyes.

The world suffers a lot. Not because the violence of bad people. But because of the silence of the good people.

All That Is Needed For Evil To Succeeded, Is For Good People To Do Nothing

The hottest places in Hell are reserved for good people who — in times of moral crisis — choose to do nothing.

No people do so much harm as those who go about doing good.