Here is where ordinary thinking and thinking that is scrupu- lous diverge from each other. The natural man is impatient with doubt and suspense: he impatiently hurries to be shut of it. Adisciplined mind takes delight in the problematic, and cherishes it until away out is found that approves itself upon examination. The questionable becomes an active questioning, asearch jdesire for the emotion of certitude gives place to quest for the objects by which the obscure and unsettled may be developed into the stable and clear. The scientific attitude may almost be defined as that which is capable of enjoying the doubtful jscientific method is, in one aspect, atechnique for making aproductive use of doubt by converting it into operations of definite inquiry.