O, düşünülemezi yaptı.
- He did the unthinkable.
Giysi giyerek bir saunaya girme düşüncesi düşünülemezdir.
- The idea of entering a sauna wearing clothes is unthinkable.
Nothing is unthinkable, nothing impossible to the balanced person, provided it comes out of the needs of life and is dedicated to life's further development - Lewis Mumford.
In An Experiment with an Air-Pump, characters repeatedly assert that once you've thought something, you can't unthink it, can you?.