I would never die for my beliefs because I might be wrong.
Bertrand Russell (1872 - 1970)

The thing always happens that you really believe in; and the belief in a thing makes it happen.
Frank Lloyd Wright (1869 - 1959)

I would rather have a mind opened by wonder than one closed by belief.
Gerry Spence, 'How to Argue and Win Every Time'

Men willingly believe what they wish.
Julius Caesar (100 BC - 44 BC), De Bello Gallico

I never cease being dumbfounded by the unbelievable things people believe.
Leo Rosten (1908 - )

They were so strong in their beliefs that there came a time when it hardly mattered what exactly those beliefs were; they all fused into a single stubbornness.
Louise Erdrich