'Cogito, ergo sum' (I think, therefore I am) was written by René Descartes in his 1637 'Discourse on the Method'. It is his foundational philosophical statement - the one thing he could not doubt was his own act of thinking.
Philosophy is the most ancient and the most audacious of all intellectual disciplines - the field that does not merely seek to answer questions but insists on questioning the questions themselves, probing the foundations of every assumption we make about knowledge, reality, morality, and meaning. Where science asks "how does the world work?", philosophy asks "how do we know that we know how the world works?" Where law asks "what is permitted?", philosophy asks "what makes anything permitted or forbidden in the first place?" Philosophy does not settle for easy answers. It is the discipline of perpetual, rigorous, honest inquiry. Consider Descartes, sitting alone in a warm room in seventeenth-century Holland, systematically dismantling every belief he held, stripping away everything that could conceivably be doubted, until he arrived at the one thing he absolutely could not doubt - the fact that he was doubting, that he was thinking. "Cogito, ergo sum" - I think, therefore I am. From this single, irreducible certainty, he attempted to rebuild the entire edifice of human knowledge on unshakeable foundations. This was not merely an intellectual exercise - it was a revolution in how humanity understood the relationship between the mind and the world it inhabits. Or consider Plato's Allegory of the Cave, that magnificent thought experiment in which prisoners chained in a cave mistake the shadows on the wall before them for reality, never having seen the world outside. When one prisoner escapes and discovers the sunlit world of actual things, he is initially blinded by a truth he has never encountered. When he returns to tell the others what he has seen, they refuse to believe him. The allegory is over two thousand years old, but its insight about the difficulty of breaking free from comfortable illusions and accustomed ways of seeing the world is as urgently relevant today as it was in ancient Athens. This quiz explores these great ideas and the extraordinary thinkers who gave birth to them. What is the Socratic method - that deceptively simple technique of asking questions - and why does it remain one of the most powerful tools for developing critical thinking ever devised? What do Jeremy Bentham and John Stuart Mill's utilitarian philosophy claim about the basis of moral decision-making? What precisely is Occam's razor - that principle of elegant simplicity that serves as a guiding heuristic in everything from science to everyday reasoning? What does the famous trolley problem reveal about the deep tensions within our moral intuitions, and why does it continue to fascinate ethicists and psychologists alike? Philosophy does not give you easy answers. But it gives you something more valuable: better questions, and the tools to pursue them honestly.