What does it mean to speak of eternity? Is eternity best understood as infinite time, stretching endlessly forward and backward, or as something wholly outside of time—a changeless, timeless “eternal now”? In this episode, the hosts wrestle with these competing conceptions, drawing on philosophy, theology, and personal experience to ask whether eternity is a thinkable concept or a regulative ideal forever beyond our grasp.

The discussion ranges from Aristotle’s view of time as the measure of motion to medieval analogies of rivers and “standing nows,” from Aquinas’s theology of resurrected bodies to Nietzsche’s dark thought of the eternal return. The hosts consider whether eternity should be tied to perfection, necessity, or redemption, and explore whether such ideas have anything to offer our day-to-day human lives.

In this episode, we reference the following thinkers/ideas/texts/etc.:

• Immanuel Kant, Critique of Pure Reason (1781)
• Aristotle, Metaphysics 
• Aristotle, Physics
• The “First Cause” argument
• Time as the “measure of motion and forces”
• “regulative ideals”
• Eternity in Christian thought
• Mathematical Platonism
• “Eternal life” in the Christian tradition
• Aquinas, “The Eternity of God,” Summa Theologica (c. 1265-1273)
• Catholic tradition of the “resurrection of the body”
• Friedrich Nietzsche, Thus Spoke Zarathustra (1883)
• Friedrich Nietzsche, Genealogy of Morals (1887)
• Nietzsche’s concept of “eternal recurrence”
• Baruch Spinoza, Ethics (1677)