But this action of the mind, which is so familiar to every thinking and reasoning man, is easier to be conceived by reflecting on what passes in us when we affirm or deny, than to be explained by words. When a man has in his head the idea of two lines, viz.
Baina pentsatzen eta arrazoitzen duen gizakiak hain egunerokoa duen gogamenaren ekintza hau ulergarriagoa zaigu baieztatzean edo ezeztatzean gure baitan gertatzen dena hausnartuz, hitzez adierazita baino.