The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants. It is its natural manure.

Politicians
Thomas Jefferson
Third U.S. president (1743-1826) and the primary author of the Declaration of Independence. He wrote "all men are created equal" while owning more than 600 enslaved people over his lifetime and fathering at least six children with Sally Hemings, an enslaved teenager in his household. As secretary of state, vice president, and president he authored the Virginia Statute for Religious Freedom, doubled the country's territory through the Louisiana Purchase, dispatched the Lewis and Clark expedition, and founded the University of Virginia. He died on July 4, 1826, the 50th anniversary of independence, only hours before his lifelong rival and friend John Adams.
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Thomas Jefferson's Other Quotes
We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness.
I have sworn upon the altar of God eternal hostility against every form of tyranny over the mind of man.
I tremble for my country when I reflect that God is just: that his justice cannot sleep for ever.
I cannot live without books.
Related Quotes
Exile is not an evil.
-- Gaius Musonius Rufus
Cato, while he lived, lived in such a way that he lacked nothing — so long as he was free to die.
-- Cato the Younger
What frees you from slavery is not wealth but needing nothing.
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If I were not Alexander, I would wish to be Diogenes.
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Stand a little out of my sunlight.
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In the northern darkness there is a fish called Kun. The Kun is so vast one cannot tell how many thousands of li it spans. It transforms into a bird called Peng. The back of the Peng is so vast one cannot tell how many thousands of li it spans.
-- Zhuang Zhou