John Sallis is Frederick J. Adelmann Professor of Philosophy at Boston College. He is author of Logic of Imagination: The Expanse of the Elemental (IUP, 2012) and Topographies (IUP, 2006). Alejandro A. Vallega is Associate Professor of Philosophy at the University of Oregon. He trained as a visual artist before studying philosophy. He is author of Latin American Philosophy from Identity to Radical Exteriority (IUP, 2014).

"Beautifully conceived and written. Sallis engages the elemental interplay of earth and sky, translucence and obscurity, airiness and density, height and depth, wet and dry, gods and mortals, storms and clouds, rivers and fog, plains and mountains–nature in its expansive, indefinable materiality and ephemeral intangiblity."—Charles E. Scott, Vanderbilt University"A profound and exceptionally nuanced piece of writing that brings philosophy and art into close proximity. Decades of Sallis's remarkable philosophical thinking are at work and play."—Jason M. Wirth, Seattle University

• List of IllustrationsAnagoge1. Clouds2. Caves3. Exorbitant Points4. Poseidon5. Blues6. City of Lights7. Time's Shadow8. The Light Spread of Time9. Heights10. Summer Snow11. Dark Light12. At Sea13. Seacoves14. Sunspots15. Visible Time16. Wild17. Quiet18. White