In rare and isolated cases, it may really have happened that such a Will to Truth a certain extravagant and adventurous pluck, a metaphysician's ambition of the forlorn hope has participated therein: that which in the end always prefers a handful of certainty to a whole cartload of beautiful possibilities; there may even be puritanical fanatics of conscience, who prefer to put their last trust in a sure nothing, rather than in an uncertain something.