One of the greatest needs of humanity today is to transcend the cultural limitations of the great religions and to find a wisdom, a philosophy, which can reconcile their differences and reveal the unity which underlies all their diversities. This has been called the "perennial philosophy," the eternal wisdom which has been revealed in a different way in each relgion.
— Bede Griffiths, Bede Griffiths: Essential Writings by Bede Griffiths, Thomas Matus, editor