Science is not only compatible with spirituality; it is a profound source of spirituality. When we recognize our place in an immensity of light-years and in the passage of ages, when we grasp the intricacy, beauty, and subtlety of life, then that soaring feeling, that sense of elation and humility combined, is surely spiritual. So are our emotions in the presence of great art or music or literature, or of acts of exemplary selfless courage such as those of Mohandas Gandhi or Martin Luther King, Jr. The notion that science and spirituality are somehow mutually exclusive does a disservice to both.

Science is not only compatible with spirituality; it is a profound source of spirituality. When we recognize our place in an immensity of light-years and in the passage of ages, when we grasp the intricacy, beauty, and subtlety of life, then that soaring feeling, that sense of elation and humility combined, is surely spiritual.

Now what should be the relation between science and spirituality? It should be a relation of mutual acceptance and true understanding. It is an act of folly on our part to expect the same truth, the same knowledge and the same power from both science and spirituality. We must not do that. Neither must we set up the same goal for science and spirituality.

I hope to show that science and spirituality are compatible, that being spiritual doesn’t require you to abandon science

Science is not only compatible with spirituality; it is a profound source of spirituality.

Segregating science and spirituality has been the greatest crime against humanity in the past century. These two main branches of knowledge that should have gone hand in hand were divided and practitioners were either labeled as modern scientists or representatives of religious faiths. “Only scientific discoveries apply to logic and intelligence. They are the only truth. Religious faith is blind and misguided.” This was the ideology that was popularized. All the recent natural disasters and the alarming changes in the global climate are challenging the further survival of this beautiful earth we live in. Now, many people cannot help thinking that all this may be the result of weighing science and spirituality on opposite sides of a scale and deeming that one is much greater than the other.

Spirit” comes from the Latin word “to breathe.” What we breathe is air, which is certainly matter, however thin. Despite usage to the contrary, there is no necessary implication in the word “spiritual” that we are talking of anything other than matter (including the matter of which the brain is made), or anything outside the realm of science. On occasion, I will feel free to use the word. Science is not only compatible with spirituality; it is a profound source of spirituality. When we recognize our place in an immensity of light-years and in the passage of ages, when we grasp the intricacy, beauty, and subtlety of life, then that soaring feeling, that sense of elation and humility combined, is surely spiritual. So are our emotions in the presence of great art or music or literature, or of acts of exemplary selfless courage such as those of Mohandas Gandhi or Martin Luther King, Jr. The notion that science and spirituality are somehow mutually exclusive does a disservice to both.

Science depends on outer experiment. Spirituality depends on inner searching and seeking. A scientist discovers the power that very often threatens even his own life. A spiritual seeker discovers the power that guides and moulds his life into a life of divine fulfilment.

Authors who attempt to build a bridge between science and spirituality tend to make one of two mistakes: Scientists generally start with an impoverished view of spiritual experience, assuming that it must be a grandiose way of describing ordinary states of mind — parental love, artistic inspiration, awe at the beauty of the night sky. In this vein, one finds Einstein’s amazement at the intelligibility of Nature’s laws described as though it were a kind of mystical insight. New Age thinkers usually enter the ditch on the other side of the road: They idealize altered states of consciousness and draw specious connections between subjective experience and the spookier theories at the frontiers of physics. Here we are told that the Buddha and other contemplatives anticipated modern cosmology or quantum mechanics and that by transcending the sense of self, a person can realize his identity with the One Mind that gave birth to the cosmos. In the end, we are left to choose between pseudo-spirituality and pseudo-science.

Finally, integral spirituality—as the very name "integral" implies—transcends and includes science, it does not exclude, repress, or deny science. To say that the spiritual currents of the cosmos cannot be captured by empirical science is not to say that they deny science, only that they show their face to other methods of seeking knowledge, of which the world has an abundance.

science and religion are intrinsically interconnected both being expressions of the human spirit.

Over the years my religion has changed and my spirituality has evolved. Religion and spirituality are very different, but people often confuse the two. Some things cannot be taught, but they can be awakened in the heart. Spirituality is recognizing the divine light that is within us all. It doesn't belong to any particular religion; it belongs to everyone.

Science and religion are two windows that people look through, trying to understand the big universe outside, trying to understand why we are here. The two windows give different views, but they look out at the same universe. Both views are one-sided, neither is complete. Both leave out essential features of the real world. And both are worthy of respect.

Twenty percent of Americans describe themselves as “spiritual but not religious.” Although the claim seems to annoy believers and atheists equally, separating spirituality from religion is a perfectly reasonable thing to do. It is to assert two important truths simultaneously: Our world is dangerously riven by religious doctrines that all educated people should condemn, and yet there is more to understanding the human condition than science and secular culture generally admit. One purpose of this book is to give both these convictions intellectual and empirical support.

Before going any further, I should address the animosity that many readers feel toward the term spiritual. Whenever I use the word, as in referring to meditation as a “spiritual practice,” I hear from fellow skeptics and atheists who think that I have committed a grievous error.
The word spirit comes from the Latin spiritus, which is a translation of the Greek pneuma, meaning “breath.” Around the thirteenth century, the term became entangled with beliefs about immaterial souls, supernatural beings, ghosts, and so forth. It acquired other meanings as well: We speak of the spirit of a thing as its most essential principle or of certain volatile substances and liquors as spirits. Nevertheless, many nonbelievers now consider all things “spiritual” to be contaminated by medieval superstition.

I do not share their semantic concerns.[1] Yes, to walk the aisles of any “spiritual” bookstore is to confront the yearning and credulity of our species by the yard, but there is no other term — apart from the even more problematic mystical or the more restrictive contemplative — with which to discuss the efforts people make, through meditation, psychedelics, or other means, to fully bring their minds into the present or to induce nonordinary states of consciousness. And no other word links this spectrum of experience to our ethical lives.