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I have hardly ever known a mathematician who was capable of reasoning.

Logic is in the eye of the logician.

This idea was also brought out very clearly by Wallace, who emphasized that apparently reasonable activities of man might very well have developed without an actual application of reasoning.

The knowledge of the theory of logic has no tendency whatever to make men good reasoners.

I read one or two other books which gave me a background in mathematics other than logic.

Logic: The art of thinking and reasoning in strict accordance with the limitations and incapacities of the human misunderstanding.

He was very much concerned with logic and function, he always worked his solos out before playing them.

Even as I pursued a doctorate in the history of ideas in my native Denmark, I realized I had neither the encyclopedic training nor the passion for cool logic - not to mention the nerve - to follow in the footsteps of classical liberal philosophers and economists such as Robert Nozick, Friedrich Hayek, and Milton Friedman.