Which French philosopher said "Cogito Ergo Sum"?

More Questions:

Which food manufacturer produces and sells Cheez Whiz?

What variety of beans is used to prepare Boston baked beans?

In boxing who suffered defeats to Tim Witherspoon, Mike Tyson and Lennox Lewis?

What is considered the sister language of English?

Which US state is home to the manmade Fort Peck Lake?

Which state is home to Australia's highest mainland mountain?

Which non-coastal western US state has the seagull as its official state bird?

What is added to copper to make bronze?

Do ants sleep?

Which Actor played Chachi Arcola on the TV show "Happy Days"?

What was the name of the main police detective played by Jack Webb on the TV show "Dragnet"?

What TV show's cops operate out of a converted church they call "the Barn"?

What was the name of the dictator of Haiti, who was also known as Papa Doc?

What was the second successful mass produced car by the Ford Motor Company called?

Whose concert was the target of a terrorist attack in May, 2017, in Manchester, UK?