Richelieu pursued this plan with greater zeal, the more he was embarrassed by the repeated demands of the Elector of Bavaria for assistance from France; for this prince, as already stated, when he first began to entertain suspicions of the Emperor, entered immediately into a secret alliance with France, by which, in the event of any change in the Emperor's sentiments, he hoped to secure the possession of the Palatinate. But though the origin of the treaty clearly showed against what enemy it was directed, Maximilian now thought proper to make use of it against the King of Sweden, and did not hesitate to demand from France that assistance against her ally, which she had simply promised against Austria. Richelieu, embarrassed by this conflicting alliance with two hostile powers, had no resource left but to endeavour to put a speedy termination to their hostilities; and as little inclined to sacrifice Bavaria, as he was disabled, by his treaty with Sweden, from assisting it, he set himself, with all diligence, to bring about a neutrality, as the only means of fulfilling his obligations to both. For this purpose, the Marquis of Breze was sent, as his plenipotentiary, to the King of Sweden at Mentz, to learn his sentiments on this point, and to procure from him favourable conditions for the allied princes. But if Louis XIII. had powerful motives for wishing for this neutrality, Gustavus Adolphus had as grave reasons for desiring the contrary. Convinced by numerous proofs that the hatred of the princes of the League to the Protestant religion was invincible, their aversion to the foreign power of the Swedes inextinguishable, and their attachment to the House of Austria irrevocable, he apprehended less danger from their open hostility, than from a neutrality which was so little in unison with their real inclinations; and, moreover, as he was constrained to carry on the war in Germany at the expense of the enemy, he manifestly sustained great loss if he diminished their number without increasing that of his friends. It was not surprising, therefore, if Gustavus evinced little inclination to purchase the neutrality of the League, by which he was likely to gain so little, at the expense of the advantages he had already obtained.