Complex sentence: His philosophical interests include continental philosophy-especially Friedrich Nietzsche, Georg Wilhelm Friedrich Hegel, Arthur Schopenhauer, Jean-Paul Sartre, Albert Camus, and existentialism generally--and also aesthetics, philosophical psychology, and philosophy of life.
Split into simpler sentences: His philosophical interests include continental philosophy-especially Friedrich Nietzsche, Georg Wilhelm Friedrich Hegel, Arthur Schopenhauer, Jean-Paul Sartre, Albert Camus, and existentialism generally. He also focuses on aesthetics, philosophical psychology, and philosophy of life.