Flee the country where a lone man holds all power: It is a nation of slaves. - Speech spoken in Caracas on 1814, January 2nd.
Source, in full
Though there might be some published translation of such a statement, it resembles the remark of Maximilien Robespierre, as quoted in Robespierre (1935) by James Matthew Thompson, p. 135: "There is one thing more despicable than a tyrant — it is a nation of slaves."
Notes from Wikiquote
Original quote in Spanish: Huid del país donde uno solo ejerza todos los poderes: es un país de esclavos. Sources: Archivo del Libertador, document N° 565; Pérez Vila, Manuel (compilator, 2009), Simón Bolívar. Doctrina del Libertador, p. 45, ISBN 978-980-276-474-7.