 Ideas he considered misguided were constant targets of Perry’s writing.In his book "Gurdjieff in the light of tradition" (1978), a study containing considerable information, Perry argues in detail against the pretensions of those he perceives as pseudo-gurus.And in "Challenges to a Secular Society" (1996), among other tasks, he counters Aldous Huxley’s writings extolling the allegedly “spiritual” effects of psychedelic drugs.