Simplify the following text for a Grade 11 native English-speaking person.
Original: John Locke ( ; 29 August 1632 â `` 28 October 1704 ) , widely known as the Father of Liberalism , was an English philosopher and physician regarded as one of the most influential of Enlightenment thinkers .
Simplified: John Locke ( ; 29 August 1632 â `` 28 October 1704 ) , known as the Father of Liberalism , was an English philosopher and physician .