Fr. Frederick Charles Copleston, S.J. was a Jesuit priest and writer on philosophy. Copleston's family was Anglican (his uncle was a bishop of Calcutta), but he converted to Roman Catholicism while a pupil at Marlborough College, and became a Jesuit in 1930. He studied and later lectured at Heythrop College and, seeing the poor standard of philosophical teaching in seminaries, he was author of an influential nine-volume "History of Philosophy" (1946-75), … Wikipedia
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First, as to the metaphysical argument: I don't admit the connotations of such a term as "contingent" or the possibility of explanation in Father Copleston's sense. www.bringyou.to/apologetics/p20.htm