Meister Eckhart

German theologian

If the only prayer you say in your entire life is ‘Thank-you’, that would suffice - https://www.theunthoughtknown.com/blog/if-the-only-prayer-you-say-in-your-entire-life-is-thank-you-that-would-suffice-meister-eckhart - These comforting words of the medieval German mystic and theologian, Meister Eckhart, speak directly of the blessed simplicity of the spiritual practice of bowing. To bow with spiritual intention is to express heartfelt gratitude with the whole body. It is an act of profound reverence for the mystery of life; A liturgy of the body that expresses the intention to give ourselves humbly over in love to the world. It is the simplest and most powerful act of prayer, a prayer that truly suffices.

https://plato.stanford.edu/entries/meister-eckhart/ - Although rather unlikely to make many philosophers’ “top-five” list of medieval Christian thinkers (and even less likely to be found on a history of philosophy syllabus), few medieval thinkers are as wildly popular today in non-academic circles (and even more widely quoted out of context—both in his day and in ours) than Meister Eckhart. Both the scholarly philosophical neglect and the popular spiritual embrace of Eckhart have, in no small part, to do with his contemporary recasting as a “mystic”—a designation which has led present-day scholars to downplay his intellectual importance and spiritual seekers to up-play his esotericism. Even the German title Meister (“master”) is often mistakenly assumed to reflect Eckhart’s status as a spiritual “guru” of sorts, when in reality it derives from the Latin honorific magister, a title granted only to the most learned of university-trained scholars of his day.