A more plausible reason for putting discipleship out of the question was the strain of visionary excitement in Mordecai, which turned his wishes into overmastering impressions, and made him read outward facts as fulfillment. Was such a temper of mind likely to accompany that wise estimate of consequences which is the only safeguard from fatal error, even to ennobling motive? But it remained to be seen whether that rare conjunction existed or not in Mordecai: perhaps his might be one of the natures where a wise estimate of consequences is fused in the fires of that passionate belief which determines the consequences it believes in. The inspirations of the world have come in that way too: even strictly- measuring science could hardly have got on without that forecasting ardor which feels the agitations of discovery beforehand, and has a faith in its preconception that surmounts many failures of experiment. And in relation to human motives and actions, passionate belief has a fuller efficacy. Here enthusiasm may have the validity of proof, and happening in one soul, give the type of what will one day be general.
At least, Deronda argued, Mordecai's visionary excitability was hardly a reason for concluding beforehand that he was not worth listening to except for pity sake. Suppose he had introduced himself as one of the strictest reasoners. Do they form a body of men hitherto free from false conclusions and illusory speculations? The driest argument has its hallucinations, too hastily concluding that its net will now at last be large enough to hold the universe. Men may dream in demonstrations, and cut out an illusory world in the shape of axioms, definitions, and propositions, with a final exclusion of fact signed Q.E.D. No formulas for thinking will save us mortals from mistake in our imperfect apprehension of the matter to be thought about. And since the unemotional intellect may carry us into a mathematical dreamland where nothing is but what is not, perhaps an emotional intellect may have absorbed into its passionate vision of possibilities some truth of what will be--the more comprehensive massive life feeding theory with new material, as the sensibility of the artist seizes combinations which science explains and justifies. At any rate, presumptions to the contrary are not to be trusted. We must be patient with the inevitable makeshift of our human thinking, whether in its sum total or in the separate minds that have made the sum. Columbus had some impressions about himself which we call superstitions, and used some arguments which we disapprove; but he had also some sound physical conceptions, and he had the passionate patience of genius to make them tell on mankind. The world has made up its mind rather contemptuously about those who were deaf to Columbus.