This chapter considers the explosion of debate in British philosophy in the decades following Clarke’s 1704 Boyle lectures, and the publication of Newton’s 1706 Optice and 1713 Principia. The early parts of the chapter explain that absolutism about time, duration, or space was defended by thinkers such as George Cheyne, Samuel Colliber, John Clarke and Catharine Cockburn; and attacked by relationists or idealists such as George Berkeley, Daniel Waterland, Edmund Law, and Joseph Clarke. The later parts of this chapter explore the absolutism of British philosopher John Jackson, whose unique views are of special interest: Jackson holds that God is extendedly present in space and time; and connects absolutism with the doctrine now known as ‘eternalism’, on which the past, present, and future are equally real.