Montesquieu

https://www.youtube.com/watch?v=h4cuUZM7Pcc

Rousseau

https://www.youtube.com/watch?v=UrzraH8oFdE

Voltaire

https://www.youtube.com/watch?v=x5dK5VKaYDk

Diderot

https://www.youtube.com/watch?v=p0VCSepFiRQ