The Essentials of Logic |
Other editions - View all
Common terms and phrases
abstract affirmative analysis analyze antecedent applied argument Argumentum argumentum ad populum assertions average believe Bode called causal cause chap CHAPTER character classification complex concepts conclusion concrete connection consists Creighton definition developed disjunctive disjunctive syllogism Distinguish doubt effect ence Epimenides error essential Euathlus evidence examples experience experimentation explain factors facts fallacy fallacy of accident false field formal Formal fallacies gism give hypothesis hypothetical syllogism ideas illicit major important individual Inductive and Deductive inference instance interpretation investigation involves judgment Judicial Proof knowledge Law of Identity logician major premise Material fallacies mathematics meaning ment mental Method of Agreement Mill's Methods mind nature negative objects observation Outline of Logic particular perception possible predicate principles probability problem proposition prove Psychology reasoning relation rule stress syllogism testimony theory things thinking thought tion total number true truth weight words
Popular passages
Page 219 - If an instance in which the phenomenon under investigation occurs, and an instance in which it does not occur, have every circumstance in common save one, that one occurring only in the former; the circumstance in which alone the two instances differ is the effect, or the cause, or an indispensable part of the cause, of the phenomenon.
Page 307 - ... passional nature not only lawfully may, but must, decide an option between propositions, whenever it is a genuine option that cannot by its nature be decided on intellectual grounds ; for to say, under such circumstances, " Do not decide, but leave the question open...
Page 224 - Subduct from any phenomenon such part as is known by previous inductions to be the effect of certain antecedents, and the residue of the phenomenon is the effect of the remaining antecedents.
Page 208 - Two things resemble each other in one or more respects ; a certain proposition is true of the one ; therefore it is true of the other.
Page 16 - From this and many other similarities in nature, such as the seven metals, etc., which it were tedious to enumerate, we gather that the number of planets is necessarily seven.
Page 215 - If two or more instances of the phenomenon under investigation have only one circumstance in common, the circumstance in which alone all the instances agree is the cause (or effect) of the given phenomenon.
Page 323 - We accuse him of having given up his people to the merciless inflictions of the most hot-headed and hard-hearted of prelates ; and the defense is that he took his little son on his knee, and kissed him! We censure him for having violated the articles of the Petition of Right, after having, for good and valuable consideration, promised to observe them ; and we are informed that he was accustomed to hear prayers at six o'clock in the morning!
Page 328 - America marks the highest level, not only of material well-being, but of intelligence and happiness, which the race has yet attained...
Page 226 - There was one quality of mind which seemed to be of special and extreme advantage in leading him to make discoveries. It was the power of never letting exceptions pass unnoticed. Everybody notices a fact as an exception when it is striking or frequent, but he had a special instinct for arresting an exception.
Page 71 - Network: anything reticulated or decussated, at equal distances with interstices between the intersections.