Coincidentally, I am reading “Schrödinger: Life and Thought” by Walter Moore. Schrödinger read everything written by Schopenhauer. He also read extensively on Buddhism and Vedanta.
He wrote “ The ego is only an aggregate of countless illusions, a phantom, a bubble sure to break. It is Karma. Acts and thoughts are forces integrating themselves into material and mental phenomena— into what we call objective and subjective appearances… The universe is the integration of acts and thoughts. Even swords and things of metal are manifestations of spirit. There is no birth and death, but the birth and death of Karma in some form or condition. There is reality, but there is no permanent individual…
Phantom succeeds to phantom as undulations to undulations over the ghostly sea of birth and death. And even as the storming of sea is motion of undulation, not of translation— even as it is the form of the wave only, not the wave itself, that travels— so in the passing of lives, there is only the rising and vanishing of forms,— forms mental, forms material. The fathomless Reality does not pass… Within every creature incarnate sleeps the Infinite Intelligence unevolved, hidden, unfelt, unknown — yet destined from eternities to awaken at last, to rend away the ghostly web of sensuous mind, to break it’s chrysalis of flesh, and pass to the extreme conquest of Space and Time.”
Moore comments “ Perhaps these thoughts occurred to Erwin when he made his great discovery of wave mechanics and found the reality of physics in wave motions, and also later when he found that this reality was part of an underlying unity of mind. Yet in the course of his life, belief in Vedanta remains strangely dissociated from both his interpretation of scientific work and his relations with other persons. He did not achieve a true integration of his beliefs with his act. The Bhagavad Gita teaches that there are three paths to salvation: The path of devotion, the path of works, and the path of knowledge. By inborn temperament and by early nurture Erwin was destined to follow the last of these paths. His intellect showed him the way, and throughout his life, he expressed in graceful essays his belief in Vedanta, but he remained what the Indians call Mahavit, a person who knows the theory, but has failed to achieve a practical realization of it in his own. From the Chandogya Upanishad : “I am a Mahavit, a knower of the word, and not an Atmavit, a knower of Atman.”