The will of Charles was unconquerable.

In these hours of disaster, tortured with pain, driven from his palace, deserted by his allies, impoverished, and borne upon his litter in humiliating flight before his foes, he was just as determined to enforce his plans as in the most brilliant hour of victory.
He sent his brother Ferdinand and other ambassadors to Passau to meet Maurice, and mediate for a settlement of the difficulties.

Maurice now had no need of diplomacy.

His demands were simple and reasonable.

They were, that the emperor should liberate his father-in-law from captivity, tolerate the Protestant religion, and grant to the German States their accustomed liberty.