Plato was an ancient Greek philosopher, thinker and innovator of the written dialogue and dialectic forms.
Former King of Macedonia
Archytas was a Greek philosopher, mathematician, and astronomer, known for his contributions to the development of mathematics and the invention of the screw pump.
Eudoxus was an ancient Greek mathematician and astronomer, credited with developing the method of exhaustion, a precursor to calculus, and advancing the study of planetary motion.