Eternity contains, undivided, the past present and future. How it can do so is a mystery which human perception and human understanding may not ordinarily grasp. The unaided intellect is powerless to solve it. But there is, potentially, a fourth-dimensional intuitive faculty which can succeed where the others fail.
-- Notebooks Category 19: The Reign of Relativity > Chapter 4: Time, Space, Causality > # 100
-- Perspectives > Chapter 19: The Reign of Relativity > # 26