“To err is human” applies equally to the layman and the philosopher. Each philosopher tends to arrive at a different set of answers to the fundamental questions.
This constant overhauling of philosophies throughout Western history can make the study of philosophy frustrating, especially for people consulting philosophers not just to play an intellectual game but to find practical answers to life’s most perplexing questions.
Beyond Illusion and Doubt is the revised and abridged version of ‘Dialectical Spiritualism’, which was available in the 80-ties. The complete listing of the Western philosophers is available as part of the Collected Teachings of Srila Prabhupada, a seven volume book set by the Bhaktivedanta Archives.