The notion of a necessary condition is less clear than that ... - Willard Van Orman Quine

"The notion of a necessary condition is less clear than that of a sufficient condition."

Willard Van Orman Quine Wisdom

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"

"I'm not angry, I'm just disappointed."

"The best things in life are free."

"You can't have everything in life, but you can have what matters most."

"A woman's intuition is rarely wrong."