the mind > attention and judgement > judgement or decision > absence of prejudice > occupy the middle [verb (transitive)] (5)
transitive. To act as a moderating influence upon; to moderate; to temper. Also: to steer (a way) which avoids extremes.
transitive. To take a middle view of. Obsolete.
transitive. To take a middle view of. Also to middle it (derogatory): to adopt a middle course. Obsolete.