John William Dunne

"Reasoning is a retrospective business—the judging of a present situation in the light of past experience."

"Now, when we say of any occurrence that it is 'physical', we mean thereby that it is potentially describable in physical terms. So it is perfectly correct, to state that, in every happening with which…"

"It is never entirely safe to laugh at the metaphysics of the 'man-in-the-street'. Basic ideas which have become enshrined in popular language cannot be wholly foolish or unwarranted. For that sort of …"

"We must live before we can attain to either intelligence or control at all. We must sleep if we are not to find ourselves, at death, helplessly strange to the new conditions. And we must die before we…"

"We have now arrived within introductory range of that very meek-spirited creature known to modern science as the "Observer". It is a permanent obstacle in the path of our search for external reality t…"

"But the facts are unquestioned. The aeroplane does do these things, and if the theory does not give warranty for the practice, then it is the theory which is wrong."