The Scotsman David Hume (1711-1776) was a philosopher and historian who promoted materialism and naturalism rather than spirituality. He was a "skeptic" towards religion, and he penned "A Treatise on Human Nature." He quipped, "You can tell what is inside a person's soul by what comes out if it." Hume is considered the greatest philosopher to write in English, but that is only because there were so few good English philosophers. Hume has been criticized for his atheistic approach and his chief claim to fame is that Charles Darwin declared Hume to have been his central influence, as did "Darwin's bulldog," Thomas Henry Huxley.