He was a man of prodigious distorted mental activity.

He had read omnivorously amid the vast stores of Hebrew literature, was a great authority on Cabalah, understood astronomy, and, still more, astrology, was strong on finance, and could argue coherently on any subject outside religion.

His letters to the press on specifically Jewish subjects were the most hopeless, involved, incomprehensible and protracted puzzles ever penned, bristling with Hebrew quotations from the most varying, the most irrelevant and the most mutually incongruous sources and peppered with the dates of birth and death of every Rabbi mentioned.
No one had ever been known to follow one of these argumentations to the bitter end.

They were written in good English modified by a few peculiar terms used in senses unsuspected by dictionary-makers; in a beautiful hand, with the t's uncrossed, but crowned with the side-stroke, so as to avoid the appearance of the symbol of Christianity, and with the dates expressed according to the Hebrew Calendar, for Karlkammer refused to recognize the chronology of the Christian.

He made three copies of every letter, and each was exactly like the others in every word and every line.