Whose profound thoughts on human nature continue to inspire philosophers today?

David Hume, an Enlightenment thinker from Scotland, remains incredibly influential because of his groundbreaking ideas about how we understand the world and ourselves. Living in the 18th century, he questioned traditional beliefs about reason and morality, arguing that our actions are driven more by feelings and habits than by pure logic. He explored topics like cause and effect, arguing we can't truly *know* that one thing causes another, only that they tend to happen together. His writings on human nature delved into emotions, morality, and how we form our beliefs. While Adam Smith is famous for economics, James Watt for inventing, and Howard Florey for medicine, Hume's philosophical focus was specifically on understanding the human mind and its workings. His ideas continue to be debated and explored by philosophers today, making him the correct answer.