“No thinker thinks twice.”
Alfred North Whitehead
Here’s the quote in context:
The ancient doctrine that “no one crosses the same river twice” is extended. No thinker thinks twice; and, to put the matter more generally, no subject experiences twice.
Alfred North Whitehead, Process and Reality, p. 29.
If you’re still wondering about this, hold that thought. What Whitehead means will become clear as this Blague unfolds.