philosophy, such as ethics, mathematics, aesthetics, politics, and even embryology. The atomic theory of Leucippus and Democritus was a response to the Eleatic school, who held that motion is not possible because everything is occupied with What-is. Democritus and Leucippus reverted the Eleatic axiom, claiming that since motions exist, What-is-not must also exist; hence void exists. Democritus and Leucippus were skeptics regarding the reliability of our senses, but they were confident that motion exists. Atoms, according to Democritus and Leucippus, had some characteristics of the Eleatic What-is: they were homogeneous and indivisible. These characteristics allowed answers to Zeno's paradoxes. Atoms move within the void, interact with each other, and form the plurality of the world we live in, in a purely mechanical manner. One conclusion of the Atomists was determinism - the philosophical view that all events are determined completely by previously existing causes. As Leucippus said, (DK 67 B2) "Nothing comes to be random but everything is by reason and out of necessity." Democritus concluded that since everything is atoms and void, several of our senses are not real but conventional. Color, for example, is not a property of atoms; hence our perception of color is a convention. As Democritus said, (DK 68 B9) "By convention sweet, by convention bitter, by convention hot, by convention cold, by convention colour; in reality atoms and void." This can be interpreted in two ways. According to James Warren there is an eliminativist interpretation, such that Democritus means that color is not real, and there is a relativist interpretation, such that Democritus means that color and taste are not real but are perceived as such by our senses through sensory interaction. Sophists The sophists were a philosophical and educational movement that flourished in ancient Greece before Socrates. They attacked traditional thinking, from gods to morality, paving the way for further advances of philosophy and other disciplines such as drama, social sciences, mathematics, and history. Plato disparaged the sophists, causing long-lasting harm to their reputation. Plato thought philosophy should be reserved for those who had the appropriate intellect to understand it; whereas the sophists would teach anyone who would pay tuition. The sophists taught rhetoric and how to address issues from multiple viewpoints. Since the sophists and their pupils were persuasive speakers at court or in public, they were accused of moral and epistemological relativism, which indeed some sophists appeared to advocate. Prominent sophists