Logic is the anatomy of thought. – John Locke
Where all is but dream, reasoning and arguments are of no use, truth and knowledge nothing. – John Locke

Logic is the anatomy of thought. – John Locke
Where all is but dream, reasoning and arguments are of no use, truth and knowledge nothing. – John Locke
The improvement of understanding is for two ends: first, our own increase of knowledge secondly, to enable us to deliver that knowledge to others. – John Locke
One unerring mark of the love of truth is not entertaining any proposition with greater assurance than the proofs it is built upon will warrant. – John Locke
Logic is a large drawer, containing some useful instruments, and many more that are superfluous. A wise man will look into it for two purposes, to avail himself of those instruments that are really useful, and to admire the ingenuity with which those that are not so, are assorted and arranged. – Charles Caleb Colton, Lacon