For how do we know that the thoughts which occur in dreaming are false rather than those other which we experience when awake, since the former are often not less vivid and distinct than the latter?
Nothing Worthy of Note Transpired Today (archive.org) The transcribed journals of Civil War General August Valentine Kautz that detail his daily life and activities during his post at Fort Steilacoom in 1850.
https://archive.org/details/nothing-worthy-of-note-transpired-today-the-northwest-journals-of-august-v.-kautz/page/n5/mode/2up