Remember that [scientific thought] is the guide of....

“ Remember that [scientific thought] is the guide of action; that the truth which it arrives at is not that which we can ideally contemplate without error, but that which we may act upon without fear; and you cannot fail to see that scientific thought is not an accompaniment or condition of human progress, but human progress itself. ”

William Kingdon Clifford

From : Lectures and Essays by the Late William Kingdon Clifford