I am too much of a skeptic to deny the possibility of anything.
Quoted by T.H. Huxley
That which can be asserted without evidence, can be dismissed without evidence.
Quoted by Christopher Hitchens
If skeptic can weakly force E, then he can force E.
Quoted by Glenn Shafer
A skeptic is a person who would ask God for his ID card.
Quoted by Edgar A. Shoaff