Eternal vigilance is the price of liberty.
Wendell Phillips, (1811-1884), abolitionist, orator and columnist for The Liberator
in a speech before the Massachusetts Antislavery Society in 1852, according to The Dictionary of Quotations edited by Bergen Evans
The battle, sir, is not to the strong alone; it is to the vigilant, the active, the brave.
Patrick Henry (1736-1799)