![of 17th century philosopher
René Descartes.
of 17th century philosopher
René Descartes.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
of 17th CENTURY philosopher
René Descartes.
The Big Bang Theory Season 12, Episode 10
![...to function in 18th century Vienna.
...to function in 18th century Vienna.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
...to function in 18th CENTURY Vienna.
The Big Bang Theory Season 4, Episode 21
![Corn dogs didn't come into existence
till the first half of the 20th century.
Corn dogs didn't come into existence
till the first half of the 20th century.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
Corn dogs didn't come into existence
till the first half of the 20th CENTURY.
The Big Bang Theory Season 2, Episode 2
![It's the 21st century.
It's the 21st century.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
It's the 21st CENTURY.
The Big Bang Theory Season 5, Episode 17
![Should I read you some bawdy
19th century limericks?
Should I read you some bawdy
19th century limericks?](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
Should I read you some bawdy
19th CENTURY limericks?
The Big Bang Theory Season 11, Episode 11