In philosophy, substance means, approximately, that element of an object without which it would not exist. In the millennia-old Aristotelian tradition[?], as well as early modern[?] traditions that follow it, substances are treated as having attributes[?] and modes[?].
... Merry Pranksters[?], with the early sound heavily influenced by Kesey's LSD-soaked Trips Festivals[?]. This early period is covered in Tom Wolfe's "The Electric Kool- ...