Ultimately, science and religion should serve rather than dominate the human societies from which they emerged. Each, I believe, serves best from a stance of awe and humility that assumes as little as possible. The best from both worlds — the greatest scientists and the most profound religious thinkers and teachers — have always practiced these two qualities. Childlike awe motivated Einstein. “All our knowledge is but the knowledge of schoolchildren,” he accepted. “The real nature of things, that we shall never know, never.” Similarly, the German Jesuit theologian Karl Rahner invoked both humility and awe when he asked, “Which do we love more, the small island of our so-called knowledge or the sea of infinite mystery?”
Science is a formalized procedure for making sense of the world by studying its material properties, perceived through the awareness of the senses, albeit senses heightened by modern marvels such as the electron microscope, the Hubble Space Telescope or the Chandra X-Ray Observatory. Scientism (or scientific materialism), on the other hand, adds to science a statement of faith: The universe is only material. Moreover, given the spectacular successes of science over the past three centuries, it is more than fair to acknowledge that science represents a powerful way to learn about the world. But scientism ups the ante: Science is the best (or only) way to make sense of the world. In short, scientism is to science what fundamentalism is to religion: cocksure and inflexible.