Complex sentence: Yet by temperament, he was the very opposite of a proto-Dzerzhinsky or a proto-Beria; he suffered from a bizarre tendency to forget his own name, and periodically had to be reminded of it by consulting his own visiting card.
Split into simpler sentences: Yet by temperament, he was the very opposite of a proto-Dzerzhinsky or a proto-Beria. He suffered from a bizarre tendency to forget his own name, and periodically had to be reminded of it by consulting his own visiting card.