The purpose of philosophy is to find out by rigorous methods what the truth is. Often its results clash with the common sense view. In such cases it is reasonable to maintain that our relatively unexamined common sense views should be abandoned and give way to the conclusions of rigorous philosophical analysis.

George Schlesinger, ‘Possible Worlds and the Mystery of Existence’, Ratio, vol. 26, no. 1 (1984), p. 10