The reason of this notion comes from the idea of the way of tea defined by this school, insisting on the discipline of the mind and the emphasis on the daily life for reflecting the spirit of the way of tea; the founder of this school lamented the idea of SEN no Rikyu placing a great importance on the instruments used for tea ceremonies, thus it eliminated the formality of presenting and observing the tea instruments used for its temae.
その由来は、千利休の道具を第一とする考え方を憂い、道具の拝見を一切排除し精神を鍛錬することに重きをおき、日常生活にこそ茶の精神が生かされなければ意味がないということからだと言われている。