There is no Matter – 11
Taste. Mortal mind says, “I taste; and this is sweet, this is sour.” Let mortal mind change, and say that sour is sweet, and so it would be. If every mortal mind believed sweet to be sour, it would be so; for the qualities of matter are but qualities of mortal mind. Change the mind, and the quality changes. Destroy the belief, and the quality disappears.
The so-called material senses are found, upon examination, to be mortally mental, instead of material. Reduced to its proper denomination, matter is mortal mind; yet, strictly speaking, there is no mortal mind, for Mind is immortal, and is not matter, but Spirit. (Eddy, Mary Baker, Unity of Good, p.35:1-12)