
Part of this quote may actually be by Ralph Washington Sockman.
The World's Religions (1991)
Source: Beyond the Post-Modern Mind: The Place of Meaning in a Global Civilization
Context: In mysteries what we know, and our realization of what we do not know, proceed together; the larger the island of knowledge, the longer the shoreline of wonder. It is like the quantum world, where the more we understand its formalism, the stranger that world becomes.