The document discusses several major Enlightenment philosophers and their political philosophies: - John Locke promoted natural rights like life, liberty, and property. He believed in a social contract and limited monarchical power. - Baron de Montesquieu advocated for separation of powers and checks and balances based on the British system. - Jean-Jacques Rousseau believed people could achieve moral freedom through a direct democracy with the general will of the people as the highest authority. - Voltaire was a defender of civil liberties like freedom of religion, speech, and trade, and criticized the church and state through his writings.