A habit of basing convictions upon evidence, and of giving to them only that degree or certainty which the evidence warrants, would, if it became general, cure most of the ills from which the world suffers.
Interpretation
Basing beliefs on evidence can significantly reduce societal problems.
Bertrand Russell suggests that if people developed the habit of forming their convictions based on solid evidence and only accepting the certainty that the evidence justifies, many of the world's issues could be resolved. This approach promotes critical thinking and rational discourse, encouraging individuals to reject unfounded beliefs and biases that lead to misunderstanding and conflict.
In practice
In a debate about climate change, one might invoke this quote to emphasize the importance of relying on scientific evidence.
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 sense of unhappiness is so much easier to convey than that of happiness. In misery we seem aware of our own existence, even though it may be in the form of a monstrous egotism: this pain of mine is individual, this nerve that winces belongs to me and to no other. But happiness annihilates us: we lose our identity.
The rain came down upon my head - Unshelter'd. And the wind rendered me mad and deaf and blind.
I view great cities as pestilential to the morals, the health and the liberties of man. True, they nourish some of the elegant arts; but the useful ones can thrive elsewhere; and less perfection in the others, with more health, virtue and freedom, would be my choice.
The belief in a political Utopia is especially dangerous. This is possibly connected with the fact that the search for a better world, like the investigation of our environment, is (if I am correct) one of the oldest and most important of all the instincts.
In high school, I had to hide my comic book side, my nerd side from the civilian world so they wouldn't categorize me. They would try to marginalize me for what I like. I tried to give it up, believe me. I tried to kick the habit. But there's too much I liked about it to give it up completely.
Thus so wretched is man that he would weary even without any cause for weariness... and so frivolous is he that, though full of a thousand reasons for weariness, the least thing, such as playing billiards or hitting a ball, is sufficient enough to amuse him.
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