https://www.khanacademy.org/humanities/us-history/colonial-america/colonial-north-america/a/the-enlightenment

The Enlightenment, also known as the Age of Reason, was an intellectual and cultural movement in the eighteenth century that emphasized reason over superstition and science over blind faith.

Rationalism is the idea that humans are capable of using their faculty of reason to gain knowledge. This was a sharp turn away from the prevailing idea that people needed to rely on scripture or church authorities for knowledge.

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Thus use logic. Sapere aude.

Logic, the study of correct reasoning according to Brittanica

https://www.britannica.com/topic/logic