Respectfully Quoted: A Dictionary of Quotations. 1989.
Thomas Jefferson (17431826)
The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants. It is its natural manure.
THOMAS JEFFERSON, letter to William Stephens Smith, November 13, 1787.The Papers of Thomas Jefferson, ed. Julian P. Boyd, vol. 12, p. 356 (1955).
A related idea was later expressed by Bertrand Barère de Vieuzac in a speech to the French national assembly, January 16, 1793: Larbre de la liberté croît lorsquil est arrosé du sang de toute espèce de tyrans (The tree of liberty grows only when watered by the blood of tyrants), Archives Parliamentaires de 1787 à 1860, vol. 57, p. 368 (1900).
And much earlier Tertullian had said: Plures efficimur quotiens metimur a vobis; semen est sanguis Christianorum (We multiply whenever we are mown down by you; the blood of Christians is seed), Apology, trans. T. R. Glover, pp. 22627 (1931).