This demand gained overwhelmingly in force with the revolutionary outbreaks of 1848. To Frederick William these came as a complete surprise, and, rudely awakened from his medieval dreamings, he even allowed himself to be carried away for a while by the popular tide. The loyalty of the Prussian army remained inviolate; but the king was too tender-hearted to use military force against his "beloved Berliners," and when the victory of the populace was thus assured his impressionable temper yielded to the general enthusiasm. He paraded the streets of Berlin wrapped in a scarf of the German black and gold, symbol of his intention to be the leader of the united Germany; and he even wrote to the indignant tsar in praise of "the glorious German revolution." The change of sentiment was, however, apparent rather than real. The shadow of venerable institutions, past or passing, still darkened his counsels. The united Germany which he was prepared to champion was not the democratic state which the theorists of the Frankfort national parliament were evolving on paper with interminable debate, but the old Holy Roman Empire, the heritage of the house of Habsburg, of which he was prepared to constitute himself the guardian so long as its lawful possessors should not have mastered the forces of disorder by which they were held captive. Finally, when Austria had been excluded from the new empire, he replied to the parliamentary deputation that came to offer him the imperial crown that he might have accepted it had it been freely offered to him by the German princes, but that he would never stoop "to pick up a crown out of the gutter."