![The Most Mysterious Things on Earth Ever](https://hight3ch.com/wp-content/uploads/2016/11/the-most-mysterious-things-on-ea.jpg)
In the seventeenth century, the philosophy of space and time emerged as a central issue in epistemology and metaphysics. At its heart, Gottfried Leibniz, the German philosopher-mathematician, and Isaac Newton, the English physicist-mathematician, set out two opposing theories of what space is.