 As the science of human nature is the only solid foundation for the other sciences, “the only solid foundation we can give to this science itself must be laid on experience and observation” (T xvi.7). Although Hume does not mention him by name, Newton (1642–1727) is his hero. He accepts the Newtonian maxim “Hypotheses non fingo”, roughly, “I do not do hypotheses”. Any laws we discover must be established by observation and experiment.