Matthew David Segall is Associate Professor in the Philosophy, Cosmology, and Consciousness department at California Institute of Integral Studies in San Francisco, CA. He is a teacher, transdisciplinary researcher and philosopher working at the intersection of the natural and social sciences, with a special focus on the study of human consciousness. He publishes on a wide-array of topics, including his most recent book Crossing the Threshold: Etheric Imagination in the Post-Kantian Process Philosophy of Schelling and Whitehead (Integral Imprint, 2023). He also blogs regularly at footnotes2plato.com.