Surely, nothing can be more dangerous than the doctrine that the moral obligations of men change with the latitude and longitude of a place.

Nothing is more dangerous to men than a sudden change of fortune.

The success of any great moral enterprise does not depend upon numbers.

There's nothing more dangerous than a resourceful idiot.

There is nothing more dangerous than the conscience of a bigot.

Little boldness is needed to assail the opinions and practices of notoriously wicked men; but to rebuke great and good men for their conduct, and to impeach their discernment, is the highest effort of moral courage.