Atheism Conquered (Latin: Atheismus Triumphatus) is a philosophical work by the Italian Dominican philosopher Tommaso Campanella. Robert Greene categorizes it as "a book attacking free-thinkers, Machiavellians, Calvinists, and heretics of all stripes." However, Greene states that Campanella expressed the arguments of heretics more strongly and succinctly than those for Catholicism, and that Campanella was actually communicating his atheist beliefs under the guise of attacking them. Catholic authorities could not condemn Campanella for his work because it was filled with the very anti-atheist arguments they used.
The work was written in Italian in 1605-1607, shortly after Campanella's release from imprisonment after being accused of leading a conspiracy against the Spanish rule in his hometown of Stilo. Campanella's aim was to establish a society based on the community of goods and wives, for on the basis of the prophecies of Joachim of Fiore and his own astrological observations, he foresaw the advent of the Age of the Spirit in the year 1600.
- Robert Greene, The 48 Laws of Power.