“As all those have shown who have discussed civil institutions, and as every history is full of examples, it is necessary to whoever arranges to found a Republic and establish laws in it, to presuppose that all men are bad and that they will use their malignity of mind every time they have the opportunity; and if such malignity is hidden for a time, it proceeds from the unknown reason that would not be known because the experience of the contrary had not been seen, but time, which is said to be the father of every truth, will cause it to be discovered.”
Book 1, Ch. 3 Variant portion: Whoever desires to found a state and give it laws, must start with assuming that all men are bad and ever ready to display their vicious nature, whenever they may find occasion for it.
Discourses on Livy (1517)
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Niccolo Machiavelli 130
Italian politician, Writer and Author 1469–1527Related quotes

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Source: World Revolution the Plot Against Civilization https://www.google.com.br/books/edition/World_Revolution_the_Plot_Against_Civili/dmlTCAAAQBAJ?gbpv=1&pg=PT162&printsec=frontcover

“In wisdom gathered over time I have found that every experience is a form of exploration.”

Physics and Philosophy (1958)
Source: Physics and Philosophy: The Revolution in Modern Science
Context: Whenever we proceed from the known into the unknown we may hope to understand, but we may have to learn at the same time a new meaning of the word "understanding."

Original: Nella vita, vivi appieno tutte le possibilità di libertà e felicità. Ogni volta avrai solo quella opportunità.
Source: prevale.net