for she has what many of us find in our own selves : a tendency to permit the insidious entrance of a meager and purblind philosophy into our everyday transactions , those we have with our fellows , our daily neighbors ... and nothing is more dangerous than this puerile , ancient , venerated compendium of opinion , belief , prejudice , and the now-discarded sciences of the past -- all of these cast-off rationalisms forming a sterile and truncated source for her deeds ; whereas were she merely to bend , to listen , she would hear the individual and wholesome expression of her own heart , her own being . ''