logician

The Turing test is named for computer scientist, mathematician, logician, and philosopher Alan Turing.

Then a loud voice silenced us all, and Joe Pidgeon, our great logician, began to hold forth.

What kind of logician must he be who thinks that a phenomenon is defined to be the condition on which he supposes it to depend?

But, viewed with regard to this purpose, they have never been considered as within the province of the logician.

A logician adds two and two and gets four; an intuitionist multiplies them and gets the same answer.

The black skin might—for anything a mere logician can say—indicate the mind of a chimpanzee.