"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."
A paradox is a logically self-contradictory statement or a statement that runs contrary to expectations. It is a statement that, despite apparently valid reasoning from true or apparently true premises, leads to a seemingly self-contradictory or a logically unacceptable conclusion. A paradox usually involves contradictory-yet-interrelated elements that exist simultaneously and persist over time. T
"A paradox is a situation which gives one answer when analyzed one way, and a different answer when analyzed another way, so that we are left in somewhat of a quandary as to actually what should happen. Of course, in physics there are never any real paradoxes because there is only one correct answer; at least we believe that nature will act in only one way (and that is the right way, naturally). So in physics a paradox is only a confusion in our own understanding."
"The assumption that anything true is knowable is the grandfather of paradoxes."
"A Paradox is truth spelt with seven letters instead of five"
"The best paradoxes raise questions about what kinds of contradictions can occur — what species of impossibilities are possible."
"PARADOX: A statement that reduces the matter at hand to complete obscurity while clarifying it. … Paradoxes are sensitive and can be routed by sneering."
"Paradoxes often arise because theory routinely refuses to be subordinate to reality."