Complex sentence: A student of espionage with a profound insight into the weaknesses and fallibilities of humans, highly sagacious and incredibly perceptive with a strong moral conscience, he also understands the grisly and unethical aspects of his profession.
Split into simpler sentences: A student of espionage with a profound insight into the weaknesses and fallibilities of humans. Highly sagacious and incredibly perceptive with a strong moral conscience; he also understands the grisly and unethical aspects of his profession.