<human>:  What books should I read if I'm interested in learning more about philosophy?
<bot>: Some books to consider if you're interested in learning more about philosophy include Plato's Republic, Aristotle's Nicomachean Ethics, Immanuel Kant's Critique of Pure Reason, David Hume's An Enquiry Concerning Human Understanding, Friedrich Nietzsche's Beyond Good and Evil, Jean-Paul Sartre's Being and Nothingness, and Martha Nussbaum's The Fragility of Goodness.