What effect did enlightenment thinkers have on the french revolution?

They made positive impacts and they introduced new ways of thinking⊂_ヽ 
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First, it transformed the monarchy. Second, the religion and the church. The Enlightenment Philosophers began to contest the dogma of the catholic church, which considered earthly life to be a simple passage towards eternal life. They challenged the teaching of the priests. They also changed the social and political values in society.