Since reasoning, or inference, the principal subject of logic, is an operation which usually takes place by means of words, and in complicated cases can take place in no other way: those who have not a thorough insight into both the signification and purpose of words, will be under chances, amounting almost to certainty, of reasoning or inferring incorrectly.


p. 11: Cited in Gaines (1976) "Foundations of fuzzy reasoning" in: International Journal of Man-Machine Studies 8(6), p. 623 - A System of Logic (1843)

John Stuart Mill Quotes

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

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

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

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