Art Quote by John of Salisbury

“The employment of the word Logic to denote the theory of Argumentation, is derived from the Aristotelian, or, as they are commonly termed, the…

— John Stuart Mill

Logic is to grammar what the sense of words is to their sound.

— Joseph Joubert

Logic is the science of the laws of thought, as thought,--that is of the necessary conditions to which thought considered in itself is a…

— Sir William Hamilton, 9th Baronet

“define logic as the science which treats of the operations of the human understanding in the pursuit of truth.”

— John Stuart Mill

As a science, logic institutes an analysis of the process of the mind in reasoning, and investigating the principles on which argumentation is conducted;…

— Richard Whately

Grammar is the logic of speech, even as logic is the grammar of reason.

— Richard Chenevix Trench

“Even in ordinary conversation, the ideas connected with the word Logic include at least precision of language, and accuracy of classification: and we perhaps…

— John Stuart Mill

Logic, like language, is partly a free construction and partly a means of symbolizing and harnessing in expression the existing diversities of things; and…

— George Santayana

The liberal arts are the arts of communication and thinking. ‘They are the arts indispensable to further learning, for they are the arts of…

— Oliver DeMille

Logic, it is often said, is the study of valid arguments. It is a systematic attempt to distinguish valid arguments from invalid arguments

— Anonymous

Logic is the anatomy of thought

— John Locke

Since reasoning , or inference, the principal subject of logic, is an operation which usually takes place by means of words , and in…

— John Stuart Mill