Logical reasoning is an argument which we have with ourselves and which reproduces internally the features of a real argument.

Logical activity is not the whole of intelligence. One can be intelligent without being particularly logical.

Resorting to slander and ridicule as the basis of reasoning for an argument - admits and confesses that no logical or good reasons exist - and justly exposes the serious lack of integrity and critical thinking skills on the part of the speaker or writer.

It is with children that we have the best chance of studying the development of logical knowledge, mathematical knowledge, physical knowledge, and so forth.

Logical positivists have never taken psychology into account in their epistemology, but they affirm that logical beings and mathematical beings are nothing but linguistic structures.

The practice of narrative and argument does not lead to invention, but it compels a certain coherence of thought.