But Philip had here to do with a head which in cunning was superior to his own. The Prince of Orange had for a long time held watch over him and his privy council in Madrid and Segovia, through a host of spies, who reported to him everything of importance that was transacted there. The court of this most secret of all despots had become accessible to his intriguing spirit and his money; in this manner he had gained possession of several autograph letters of the regent, which she had secretly written to Madrid, and had caused copies to be circulated in triumph in Brussels, and in a measure under her own eyes, insomuch that she saw with astonishment in everybody's hands what she thought was preserved with so much care, and entreated the king for the future to destroy her despatches immediately they were read. William's vigilance did not confine itself simply to the court of Spain; he had spies in France, and even at more distant courts. He is also charged with not being over scrupulous as to the means by which he acquired his intelligence. But the most important disclosure was made by an intercepted letter of the Spanish ambassador in France, Francis Von Alava, to the duchess, in which the former descanted on the fair opportunity which was now afforded to the king, through the guilt of the Netherlandish people, of establishing an arbitrary power in that country. He therefore advised her to deceive the nobles by the very arts which they had hitherto employed against herself, and to secure them through smooth words and an obliging behavior. The king, he concluded, who knew the nobles to be the hidden springs of all the previous troubles, would take good care to lay hands upon them at the first favorable opportunity, as well as the two whom he had already in Spain; and did not mean to let them go again, having sworn to make an example in them which should horrify the whole of Christendom, even if it should cost him his hereditary dominions. This piece of evil news was strongly corroborated by the letters which Bergen and Montigny wrote from Spain, and in which they bitterly complained of the contemptuous behavior of the grandees and the altered deportment of the monarch towards them; and the Prince of Orange was now fully sensible what he had to expect from the fair promises of the king.
The letter of the minister, Alava, together with some others from Spain, which gave a circumstantial account of the approaching warlike visit of the king, and of his evil intentions against the nobles, was laid by the prince before his brother, Count Louis of Nassau, Counts Egmont, Horn, and Hogstraten, at a meeting at Dendermonde in Flanders, whither these five knights had repaired to confer on the measures necessary for their security. Count Louis, who listened only to his feelings of indignation, foolhardily maintained that they ought, without loss of time, to take up arms and seize some strongholds. That they ought at all risks to prevent the king's armed entrance into the provinces. That they should endeavor to prevail on the Swiss, the Protestant princes of Germany, and the Huguenots to arm and obstruct his passage through their territories; and if, notwithstanding, he should force his way through these impediments, that the Flemings should meet him with an army on the frontiers. He would take upon himself to negotiate a defensive alliance in France, in Switzerland, and in Germany, and to raise in the latter empire four thousand horse, together with a proportionate body of infantry. Pretexts would not be wanting for collecting the requisite supplies of money, and the merchants of the reformed sect would, he felt assured, not fail them. But William, more cautious and more wise, declared himself against this proposal, which, in the execution, would be exposed to numberless difficulties, and had as yet nothing to justify it. The Inquisition, he represented, was in fact abolished, the edicts were nearly sunk into oblivion, and a fair degree of religious liberty accorded. Hitherto, therefore, there existed no valid or adequate excuse for adopting this hostile method; he did not doubt, however, that one would be presented to them before long, and in good time for preparation. His own opinion consequently was that they should await this opportunity with patience, and in the meanwhile still keep a watchful eye upon everything, and contrive to give the people a hint of the threatened danger, that they might be ready to act if circumstances should call for their co-operation. If all present had assented to the opinion of the Prince of Orange, there is no doubt but so powerful a league, formidable both by the influence and the high character of its members, would have opposed obstacles to the designs of the king which would have compelled him to abandon them entirely. But the determination of the assembled knights was much shaken by the declaration with which Count Egmont surprised them. "Rather," said he, "may all that is evil befall me than that I should tempt fortune so rashly. The idle talk of the Spaniard, Alava, does not move me; how should such a person be able to read the mind of a sovereign so reserved as Philip, and to decipher his secrets? The intelligence which Montigny gives us goes to prove nothing more than that the king has a very doubtful opinion of our zeal for his service, and believes he has cause to distrust our loyalty; and for this I for my part must confess that we have given him only too much cause. And it is my serious purpose, by redoubling my zeal, to regain his good opinion, and by my future behavior to remove, if possible, the distrust which my actions have hitherto excited. How could I tear myself from the arms of my numerous and dependent family to wander as an exile at foreign courts, a burden to every one who received me, the slave of every one who condescended to assist me, a servant of foreigners, in order to escape a slight degree of constraint at home? Never can the monarch act unkindly towards a servant who was once beloved and dear to him, and who has established a well-grounded claim to his gratitude. Never shall I be persuaded that he who has expressed such favorable, such gracious sentiments towards his Belgian subjects, and with his own mouth gave me such emphatic, such solemn assurances, can be now devising, as it is pretended, such tyrannical schemes against them. If we do but restore to the country its former repose, chastise the rebels, and re-establish the Roman Catholic form of worship wherever it has been violently suppressed, then, believe me, we shall hear no more of Spanish troops. This is the course to which I now invite you all by my counsel and my example, and to which also most of our brethren already incline. I, for my part, fear nothing from the anger of the king. My conscience acquits me. I trust my fate and fortunes to his justice and clemency." In vain did Nassau, Horn, and Orange labor to shake his resolution, and to open his eyes to the near and inevitable danger. Egmont was really attached to the king; the royal favors, and the condescension with which they were conferred, were still fresh in his remembrance. The attentions with which the monarch had distinguished him above all his friends had not failed of their effect. It was more from false shame than from party spirit that he had defended the cause of his countrymen against him; more from temperament and natural kindness of heart than from tried principles that he had opposed the severe measures of the government. The love of the nation, which worshipped him as its idol, carried him away. Too vain to renounce a title which sounded so agreeable, he had been compelled to do something to deserve it; but a single look at his family, a harsher designation applied to his conduct, a dangerous inference drawn from it, the mere sound of crime, terrified him from his self-delusion, and scared him back in haste and alarm to his duty.
Orange's whole plan was frustrated by Egmont's withdrawal. The latter possessed the hearts of the people and the confidence of the army, without which it was utterly impossible to undertake anything effective.