The wager is akin to play with chance and arises from the holding of opposite opinions, which can only be settled by future events. Even if the bet concerns something which is past or present, still the decision must be in the future, and the fighting element comes in in the striving of each to prove his superiority, the interest being much enhanced by pooling the stakes. The bettor’s conviction as to the correctness of his opinion may be strong or weak[414]—absolute certainty destroys the validity of the bet, while absolute uncertainty makes it a mere game of chance, whereas it should depend, like the best card games, on a union of reasoning and hazard. For this reason future events are the proper subjects of the wager, and we will confine ourselves for brevity’s sake to such bets. Schaller says rightly: “The future is pre-eminently the object of conjecture, of the reckoning of probabilities. Even when present circumstances seem to tend inevitably to a certain result, there are still infinite possibilities that other results may transpire. Therefore the wager should concern something yet to come.”[415] One of the earliest forms of betting was on physical or mental superiority, and the stakes formerly so common in reasoning games may be regarded in the same light. There was much betting on the victor in the old German riddle contests and life itself was sometimes staked, if we may depend on the ancient accounts. More often, though, physical prowess was the subject of the wager. “Indeed, Tacitus may be right,” says Schuster, “when he records that the Germans disdained to be praised for ordinary physical vigour, yet they gave prizes to the victors in their contests and liked to claim the glory when it set them above others. Reputation with them must not be mere empty words; one must work for it to the full extent of his powers. Many examples illustrate this spirit; for instance, Welent and Amilias, the smiths, each boasted that he could not be surpassed in his art. The latter offered to bet on it, and Welent replied, ‘I have not much property, but I will stake it all.’ Then said Amilias, ‘If you have nothing else, stake your head, and I will stake mine, and whichever of us is the better man shall cut the other’s head off.’ Two of Olaf Trygvason’s retainers boasted of being superior mountain climbers, one wagering his ring on it, and the other his head.”[416] Schuster cites, too, the famous contest in the Nibelungenlied, to which Brunhild thus challenges King Gunther: “She said: If he is your lord and you are in his hire, Tell him that I have sworn that whoever can resist my play, And prove himself my master there, him will I wed, While if I win you must go alone from hence.” Fable makes animals wager in the same way; the old tale of the hare and the hedgehog is found even in Africa, although there the hedgehog has become a tortoise.[417]