Idealism saith: matter is a phenomenon, not a substance. Idealism acquaints us with the total disparity between the evidence of our own being, and the evidence of the world's being.
 Ralph Waldo Emerson, Nature (1836). copy citation

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Author Ralph Waldo Emerson
Source Nature
Topic idealism evidence
Date 1836
Language English
Reference
Note
Weblink https://en.wikisource.org/wiki/Nature,_Addresses_and_Lectures/Nature

Context

“When we consider Spirit, we see that the views already presented do not include the whole circumference of man. We must add some related thoughts.
Three problems are put by nature to the mind; What is matter? Whence is it? and Whereto? The first of these questions only, the ideal theory answers. Idealism saith: matter is a phenomenon, not a substance. Idealism acquaints us with the total disparity between the evidence of our own being, and the evidence of the world's being. The one is perfect; the other, incapable of any assurance; the mind is a part of the nature of things; the world is a divine dream, from which we may presently awake to the glories and certainties of day.” source