 The history of the issues surrounding Molyneux’s question shows that the question was not as easy to answer as Molyneux himself may have assumed. On the contrary, there is no problem in the history of the philosophy of perception that has provoked more thought than the problem that Molyneux raised in 1688. In this sense, Molyneux’s problem is one the most fruitful thought-experiments ever proposed in the history of philosophy, which is still as intriguing today as when Molyneux first formulated it more than three centuries ago.