Concentration is a cornerstone of mindfulness practice. Your mindfulness will only be as robust as the capacity of your mind to be calm and stable. Without calmness, the mirror of mindfulness will have an agitated and choppy surface and will not be able to reflect things with any accuracy.
Jon Kabat-ZinnAny really good scientist is as much an artist as a scientist. All the interesting stuff is found on the edge between knowing and not knowing. I know that sounds like a meditation teacher speaking, but when you're in the laboratory, or you're theorizing about physics, you need to know what you know, but if you can't get out from under that, you won't be able to make that insightful, first-time connection that nobody else has seen before.
Jon Kabat-ZinnLife on earth is a whole, yet it expresses itself in unique time-bound bodies, microscopic or visible, plant or animal, extinct or living. So there can be no one place to be. There can be no one way to be, no one way to practice, no one way to learn, no one way to love, no one way to grow or to heal, no one way to live, no one way to feel, no one thing to know or be known. The particulars count.
Jon Kabat-Zinn