The key idea of John Locke's Enlightenment theory was to protect and enhance the freedoms and rights of who supported the Enlightenment idea that people are naturally selfish.

The key idea of John Locke's Enlightenment was to protect and enchance the freedoms and rights of the individual.

Explanation:

Locke believed that people were neither naturally good or bad, contrary to Hobbes (who believed that people were naturally bad), and Rousseau (who believed people were naturally good).

For this reason, he thought that the state was necessary but only to protect the three basic human rights that are natural to every individual: the right to life, the right to liberty, and the right to property.