Complex sentence: For all his misanthropic qualities and bitterness, Bernard does possess redeeming and sympathetic characteristics; he is clearly incredibly intelligent and well read, if ill-disposed to use his intelligence to any great degree.
Split into simpler sentences: For all his misanthropic qualities and bitterness, Bernard does possess redeeming and sympathetic characteristics. He is clearly incredibly intelligent and well read, if ill-disposed to use his intelligence to any great degree.