any just examination, or test, of the things so affirmed. Thirdly. Reason is fully persuaded that it judgeth right, when the conceptions, or ideas, of things are clearly and distinctly perceived; nevertheless the often discovers herself to have been mistaken, whilst she thought that she perceived something clearly and distinctly, when at the same time she was in an error. Fourthly. In as far as reason denotes a faculty, it is the next efficient cause of perception and judgement; not the rule: but