“Los tres grandes majaderos de la historia hemos sido Jesucristo, Don Quijote… y yo.”

Original

The three greatest fools of History have been Jesus Christ, Don Quixote... and me!

Words reportedly said to his physician in his final days, but not his last words, as quoted in Our Lord Don Quixote : The Life of Don Quixote and Sancho, with Related Essays (1967) by Miguel de Unamuno, as translated by Anthony Kerrigan, p. 386
The exact word used by Bolívar in Spanish is "majadero", whose meaning is "a person who insists with inopportune obstinacy in a pretension."
Variant translations or versions:
The three greatest fools of history have been Jesus Christ, Don Quixote — and I!
As quoted in Simón Bolívar and Spanish American Independence, 1783-1830 (1968) by John J. Johnson and Doris M. Ladd, p. 115
The three greatest idiots in history, have been Jesus Christ, Don Quixote, and myself.
As quoted in Nineteenth-century Gallery : Portraits of Power and Rebellion (1970) by Stanley Edward Ayling, p. 122
In the course of history, there have been three radicals: Jesus Christ, Don Quixote, and... me.
The three biggest fools in the world have been Jesus Christ, Don Quixote, and... me.
Jesus Christ, Don Quixote and I: three greatest fools of history.
We have sewn the sea — Jesus Christ, Don Quixote and me: the three great fools of history...
I’ve been plowing in the sea. Jesus Christ, Don Quixote and I — the three great mavericks of history.
Fuente: http://dle.rae.es/srv/fetch?id=NwsNlzj