Definitions.... are never really needed, and rarely of any use
Interpretation
Definitions can be unhelpful and unnecessary.
Karl Popper suggests that definitions often do not contribute meaningfully to our understanding, implying that rigid categories can limit our perception of concepts. Instead, he advocates for a more fluid approach to knowledge where the nuances of ideas are recognized over overly simplistic definitions.
In practice
In a philosophy class discussion, one might use this quote to emphasize the limitations of strict definitions.
The growth of our knowledge is the result of a process closely resembling what Darwin called 'natural selection'; that is, the natural selection of hypotheses: our knowledge consists, at every moment, of those hypotheses which have shown their (comparative) fitness by surviving so far in their struggle for existence, a competitive struggle which eliminates those hypotheses which are unfit.
If you can't say it simply and clearly, keep quiet, and keep working on it till you can.
No particular theory may ever be regarded as absolutely certain.... No scientific theory is sacrosanct.
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.
A rationalist is simply someone for whom it is more important to learn than to be proved right; someone who is willing to learn from others - not by simply taking over another's opinions, but by gladly allowing others to criticize his ideas and by gladly criticizing the ideas of others
Thus science must begin with myths, and with the criticism of myths; neither with the collection of observations, nor with the invention of experiments, but with the critical discussion of myths, and of magical techniques and practices.
It is not the end of the physical body that should worry us. Rather, our concern must be to live while we're alive - to release our inner selves from the spiritual death that comes with living behind a facade designed to conform to external definitions of who and what we are.
It has been frequently remarked, that it seems to have been reserved to the people of this country to decide, by their conduct and example, the important question, whether societies of men are really capable or not, of establishing good government from reflection and choice, or whether they are forever destined to depend, for their political constitutions, on accident and force.
One will rarely err if extreme actions be ascribed to vanity, ordinary actions to habit, and mean actions to fear.
There will be no war, but in the pursuit of principle no stone will be left standing.
Chinese martial artists consider themselves to be gardeners, and it's an honor for them to take care of this garden, to better it and hand it over to the generations that follow. I think that's a very important message in a time when personal achievement seems to be the only criteria of success.
We all labour against our own cure, for death is the cure of all diseases.
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