George Stuart Fullerton (1859-1925) was an American philosopher and psychologist. Fullerton was born at Fatehgarh, India, the son of the Rev. Robert Stuart Fullerton. He came to this country as a youth.Fullerton's philosophy was realist. His writings include: The Conception of the Infinite (1887)A Plain Argument for God (1889)On Sameness and Identity (1890)On the Perception of Small Differences, with Cattell (1892)The Philosophy of Spinoza (1894)On Spinozistic Immortality (1899)A System of Metaphysics (1904)An Introduction to Philosophy (1906)The World We Live in, or Philosophy and Life in the Light of Modern Thought (1912)Germany of to-dayA Handbook of Ethical Theory (1922