Though such a beautiful quote (as well as others of them) by Albert Einstein, I feel it is important to take it in the context of which is was being used. He often spoke about the concepts of beauty, awe, and mystery, and was often misunderstood to be a cold, calculating mind, heart, and soul - quite the contrary, this is partly how he felt on this non-science endeavour, that he himself was also fond of.
"The most beautiful thing we can experience is the mysterious. It is the source of all true art and all science. He to whom this emotion is a stranger, who can no longer pause to wonder and stand rapt in awe, is as good as dead: his eyes are closed."
As certain as the Laws of Nature and mathematics can be, he also well understood the differences between what is known as Reality (the "Real" to each individual), and what is known as Actuality (the "Actual" to every individual) - see Actuality and Reality. The knowledge of waves from a scientific perspective will provide an Actuality to be worked with, and can be calculated through the laws of mathematics - however, any of us here would be hard-pressed to admit that a mathematical realization/epiphany is the only thing possible or that we often experience/Realize in waves.
“As far as the laws of mathematics refer to reality, they are not certain; and as far as they are certain, they do not refer to reality...”
"...Concerning matter, we have been all wrong. What we have called matter is energy, whose vibration has been so lowered as to be perceptible to the senses. There is no matter."
This is all quite important to know not only the outer-space of universe, and also the inner-space within each of us. It is all indeed something that can be harmonized and balanced, and in fact as we know it in our world today, perhaps it should be.
"The intuitive mind is a sacred gift and the rational mind is a faithful servant. We have created a society that honors the servant and has forgotten the gift."
I'll leave the post be with one of my favorite quotes on the subject, to illustrate how these complementary concepts can be utilized or experienced, as well as give everyone a sneak peek into an upcoming Esoteric Theater broadcast on the subject.
"An occultist does not swear by any original record or authority. The facts of the spiritual world alone are conclusive as far as he is concerned, but the value of the original records dawns upon him anew. Spiritual science is not based upon any original record or religion but upon the investigation of spiritual facts.
The foundation of all spiritual science is objective investigation. Then, if the content of the original records proves to be identical, the occultist will be in a position to value them truly." ~ Rudolf Steiner - Rosicrucian Esotericism