What is the meaning of it?

Yet I know all these men. If I don't know all of them personally, I know their characters pretty nearly, their past, and their way of thinking. They certainly all have mothers, some of them wives and children. They are certainly for the most part good, kind, even tender-hearted fellows, who hate every sort of cruelty, not to speak of murder; many of them would not kill or hurt an animal. Moreover, they are all professed Christians and regard all violence directed against the defenseless as base and disgraceful.

Certainly not one of them would be capable in everyday life, for his own personal profit, of doing a hundredth part of what the Governor of Orel did.

Every one of them would be insulted at the supposition that he was