A priori Logical propositions are such as can be known a priori without study of the actual world.
Interpretation
A priori propositions are those that can be understood without empirical evidence or experience.
The quote by Bertrand Russell discusses the nature of a priori logical propositions, which are inherent truths or knowledge that can be known independently of experience in the physical world. This highlights a critical distinction in philosophy between what can be deduced through reason alone and what must be verified through observation and empirical study, emphasizing the value and limitations of different types of knowledge.
In practice
This quote can be used in a philosophy class discussion about the nature of knowledge.
St. Paul introduced an entirely novel view of marriage, that it existed primarily to prevent the sin of fornication. It is just as if one were to maintain that the sole reason for baking bread is to prevent people from stealing cake.
Freedom comes only to those who no longer ask of life that it shall yield them any of those personal goods that are subject to the mutations of time.
Of these austerer virtues the love of truth is the chief, and in mathematics, more than elsewhere, the love of truth may find encouragement for waning faith. Every great study is not only an end in itself, but also a means of creating and sustaining a lofty habit of mind; and this purpose should be kept always in view throughout the teaching and learning of mathematics.
At all times, except when a monarch could enforce his will, war has been facilitated by the fact that vigorous males, confident of victory, enjoyed it, while their females admired them for their prowess.
Moreover, the attitude that one ought to believe such and such a proposition, independently of the question whether there is evidence in its favor, is an attitude which produces hostility to evidence and causes us to close our minds to every fact that does not suit our prejudices.
Extreme hopes are born from extreme misery.
The hoop dancer dances within what encircles him, demonstrating how the people live in motion within the circling spirals of time and space. They are no more limited than water and sky. At green corn dance time, water and sky come together, in Indian time, to make rain.
The interior deprives men of their senses. Here, the eerie stillness of the wilderness and the darkness of night render the men both deaf and blind. Without eyes or ears, they have no frame of reference-and without a frame of reference, they have no clear identities.
There are too many accidents that can befall life on a single planet.
Song of God and Son of Man, there He hangs, bearing pains unutterable, the just for the unjust, to bring us to God.
All human societies go through fads in which they temporarily either adopt practices of little use or else abandon practices of considerable use.
Of what a strange nature is knowledge! It clings to a mind when it has once seized on it like a lichen on a rock." - Frankenstein p115
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