Authors:

The most thought-provoking thing in our thought-provoking time is that we are still not thinking.

"'Was heisst Denken?' ('What is Called Thinking?')". Book by Martin Heidegger, translated by Fred D. Wieck and J. Glenn Gray, 1968.
The most thought-provoking thing in our thought-provoking time is that we are still not thinking.