Writing to a friend about Iturbide, he said:

"You must be aware that Iturbide made himself emperor through the grace of Pío, first sergeant.[1] … I am very much afraid that the four boards covered with crimson, and which are termed a throne, cause the shedding of more blood and tears and give more cares than rest…. Some believe that it is very easy to put upon one's head a crown and have all adore it; But I believe that the period of monarchy is pass and that thrones will not be up-to-date in public opinion until the corruption of men chokes love of freedom."

[Footnote 1: Augustin de Iturbide was proclaimed Emperor of Mexico as the result of a mutiny led in Mexico City by a sergeant called Pio Marcha.]

Regarding the battle of Pichincha, he said: "Sucre is the Liberator of
Ecuador."

No better praise could be given his worthy lieutenant.

Once in Quito, he received the alarming news from Perú, which province had been left by San Martín, that several serious defeats had been suffered by the independents. He immediately made ready to free the viceroyalty from Spain, realizing that while Perú remained under Spain the independence of Colombia would be in danger. The viceroy of Perú had 23,000 European soldiers and all the resources necessary to carry on war.

Perú was the last South American country to proclaim its independence. Although there had been some movements of insurrection in 1809 in Alto Perú (now Bolivia), they were soon quelled and the country once more placed under the dominion of Spain. As a result, Perú was in position to send reinforcements to the royalists in Chile and was a constant menace to Colombia. The patriots of Chile, after obtaining their freedom, organized San Martín's expedition to invade Perú. When San Martín entered Lima early in July, 1821, the viceroy (Pezuela) was deposed by an assembly, and Laserna was appointed to take his place. Once in Lima, San Martín entered upon a period of inactivity which resulted in heavy losses to the independents. He was even ready to communicate with the Spaniards in order to arrange for the establishment of a regency in Perú, awaiting the arrival of a European prince to govern the country. He even appeared ready to go to Spain, himself, to beg for a prince.

The viceroy established his residence in Cuzco, the old capital of the
Incas, and the Spanish officers obtained several partial victories.

The defeats of the independent forces brought about the dissolution of a junta which had taken charge of the government. At that time, Bolívar decided to intervene to help Perú gain her independence. He decided to send 3,000 men at once and to follow himself with 3,000 more to undertake this last part of his important work. As we have said, his decision in this matter was based, among other things, on the realization that the freedom of Colombia was in constant danger while the royalists occupied Perú. While making preparations for the campaign, he received news from Santander, the vice-president of Colombia, that the Spanish general, Morales, was advancing from Mérida to Cúcuta with a powerful army. He decided to send Sucre to Lima to handle the situation there and to go, himself, to Bogotá to defend his own country. He would have been unable to go to Lima immediately anyway, for he had not yet obtained permission from the Colombian government to do so. On his way to Bogotá he learned that the reports of the movements of Morales were very much exaggerated and that his forces were not so large as at first thought. Meanwhile, the Perúvians were insisting that Bolívar come to assist them, and the Constitutional Congress of Perú even instructed the President to ask the Libertador Presidente to inform his home government that the government of Perú ardently besought him to lend his assistance. Aware of the inefficient organization of the Peruvian forces, Bolívar strongly advised that attacks should not be made at once in order to see whether negotiations could bring about the desired results, or to allow time in which to improve the condition of the army. He argued that no movement should be made until it was certain that independence could be gained only through the success of arms.

While Bolívar was still undecided, a powerful royalist army approached Lima, and the insurgents had to leave the capital and take shelter in the near-by port of Callao. Sucre, to whom the command of the united army had been offered, but who had not accepted this commission, directed the retreat. In Callao he assumed power, organized the insurgents of the city, and undertook other military operations. The royalists remained in Lima for a short while only, and then their opponents reoccupied the city.