Quotes by Paradox The best paradoxes raise questions about what kinds of contradictions can occur-what species of impossibilities are possible. William Poundstone raises-questions paradox kind Paradox is thus a much deeper and universal concept than the ancients would have dreamed. Rather than an oddity, it is a mainstay of the philosophy of science. William Poundstone oddities paradox philosophy The assumption that anything true is knowable is the grandfather of paradoxes. William Poundstone paradox assumption grandfather He was a great thundering paradox of a man. William Manchester he great man paradox «12345678