“I do not   know how to teach philosophy without becoming a disturber of the peace.”    

Baruch Spinoza.

From Wikipedia:

 Baruch Spinoza was a Dutch philosopher of Sephardi/Portuguese origin. By laying the groundwork for the 18th-century Enlightenment and modern biblical criticism, including modern conceptions of the self  and the universe.

He came to be considered one of the great rationalists of 17th-century philosophy.