The book comprises of some dialogues between Pierrot and the three empiricists, Locke, Berkeley and Hume, and as Pierrot discusses with them about the empiricism of colour, and he contrasts his own views on colour and experience with the three empiricists separately. Firstly, there are six dialogues between Pierrot and the empiricists about colour and empiricism. And secondly I have written some dialogues of Plato and Aristotle, and as Empedocles, Democritus and Epicurus have much to say on physics and metaphysics. And because Plato and Aristotle both advocate metaphysics, and Empedocles, Democritus and Epicurus, the three of them advocate physics, and they reject metaphysics. And furthermore, Empedocles, Democritus, and Epicurus, the three of them would like to differ with Aristotle on the physics of the world.