Hobbes rejected what we now know as the scientific method because he believed that the observation of nature itself is too subjective a basis on which to ground philosophy and science. Hobbes contested the scientific systems of the natural philosophers Francis Bacon and Robert Boyle. These major figures in the Scientific Revolution in England base their natural philosophy on a process of inductive reasoning, making inferences and conclusions based on the observation of nature and the manipulation of nature through experimentation.

For Hobbes, the chief aim of philosophy is to create a totalizing system of truth that bases all its claims on a set of foundational principles and is universally demonstrable through the logic of language. He rejects the observation of nature as a means of ascertaining truth because individual humans are capable of seeing the world in vastly different ways. He rejects inductive reasoning, arguing that the results of contrived experiments carried out by a few scientists can never be universally demonstrable outside of the laboratory. Accordingly, Hobbes holds that geometry is the branch of knowledge that best approximates the reasoning that should form the basis of a true philosophy. He calls for a philosophy based on universally agreed-upon first principles that form the foundation for subsequent assertions.