A major difficulty is that the answer to the Riddle of the Sphinx is partly a product of the answers that we already have given to the riddle in its various forms.

Those who lack all idea that it is possible to be wrong can learn nothing except know-how.

We do not know enough about how the present will lead into the future.

Surrender to alcohol intoxication provides a partial and subjective shortcut to a more correct state of mind.

Number is different from quantity. This difference is basic for any sort of theorizing in behavioral science, any sort of imagining of what goes on between organisms or inside organisms as part of their processes of thought.

We are discovering today that several of the premises which are deeply ingrained in our way of life are simply untrue and become pathogenic when implemented with modern technology.

Language commonly stresses only one side of any interaction.