He would go any distance out of his way to avoid harming a fly.

I cannot even trust him to procure for me the simplest specimens of insect or animal life.

Apart from this, he is a man of some property which he has no idea what to do with.

He is, I think I may say, too devoted to me to dream of ever leaving my service." "You think it would be out of the question, then," Quest asked, "to associate him with the crime ?" The Professor's confidence was sublime.
"I could more readily associate you, myself, or young Mr.Rheinholdt here with the affair," he declared.
His words carried weight.

The little breath of suspicion against the Professor's servant faded away.