believing, I thought. Still more did I believe my reasoning. It was only slowly that I began to sus

of the habitual deceptions of sight and touch and hearing. I came upon these things in my reading, in the laboratory, with microscope or telescope, lived with them

tal and para

one draws a se

n through each horizontal line, one series (top) sl

fficient science to understand this delusion, the impression is created that these lines converge to the rig

he might remain permanently under the impression that the main lines were out of parallelism. And all the infirmities of eye and ear, touch and taste, are discovered and checked by the fact that the erroneous impressions presently strike against fact and discover a

better. There is no ground in matter-of-fact experience for assuming that there is any more inevitable certitude about purely intellectual operations than there is about sensory percep

n there is in this view of life for

eem surer th

rer than it is and is more p

ct is not what