I believe that, when the mystics contrast "reality" with "appearance," the word "reality" has not a logical, but an emotional, significance. .. past, present, and future, all exist, in some sense, together, and the present does not have that pre-eminent reality which it has to our usual ways of apprehending the world. ... The fact that mystics do make assertions is owing to their inability to separate emotional importance from scientific validity.
Source: Religion and Science, 1935, chapt. 7
More info.: https://russell-j.com/beginner/RS1935_07-090.HTM