Logic is the science of inference; validity depends on form,... - Willard Van Orman Quine

"Logic is the science of inference; validity depends on form, not content."

Willard Van Orman Quine Knowledge

Philosopher Logician American 1908–2000

More from Willard Van Orman Quine

"To be is to be the value of a variable"

"The totality of our so-called knowledge or beliefs is a man-made fabric which impinges on experience only along the edges"

"No entity without identity"

"We can never do just one thing"

"We're not just after treasure. We're preserving history."

"The mind is humanity's greatest tool."

"A tidy room reflects a tidy mind."

"You can learn a lot about a person by how they keep their space."