A classic account of the psychedelic experience The Joyous Cosmology is Alan Watts s exploration of the insight that the consciousness-changing drugs LSD, mescaline, and psilocybin can facilitate when accompanied with sustained philosophical reflection by a person who is in search, not of kicks, but of understanding. More than an artifact, it is both a riveting memoir of Watts s personal experiments and a profound meditation on our perennial questions about the nature of existence and the existence of the sacred. Includes Watts s article Psychedelics and Religious Experience