  Leibniz’s positive account of space and time might be thought of as  resting on two primary pillars and being filled out by a number of  ancillary theses. The first pillar consists in an alternative model,  or conception, of space and time offered in conscious opposition to  the Newtonian conception absolute space and time. According to  Leibniz, space and time are not so much things in which  bodies are located and move as systems of relations holding  between things. He thus famously tells Clarke in his Third Paper: