Aside from the theatre, his chief interests were philosophy and science. F Ficino, Marsilio - an Italian philosopher and theologian, his work translating and commenting on Plato helped the Platonic revival during the Renaissance. G H Heraclitus - Greek philosopher. He believed that since the world is always changing, fire must be the basic building block for the universe. Everything, he said, is changing.
Nothing is constant.
He developped many things including a sort of vending machine, and a rotary steam engine. In math he, amoung other things, devised a method of approximating square roots and cubed roots. Hobbes, Thomas - English philosopher and political theorist. Hume, David - Scottish philosopher and historian. He decided that knowledge was impossible, although people have to believe they can trust their senses and thoughts or they would go mad.