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.
.. that a rule, which, in speculation, may seem the most advantageous to society, may yet be found, in practice, totally pernicious and destructive.
Everything important that I have done can be put into a little suitcase.
What has been forgotten is never something purely individual. Everything forgotten mingles with what has been forgotten of the prehistoric world, forms countless, uncertain, changing compounds, yielding a constant flow of new, strange products.
All religions lead to the same God, and all deserve the same respect. Anyone who chooses a religion is also choosing a collective way for worshipping and sharing the mysteries. Nevertheless, that person is the only one responsible for his or her actions along the way and has no right to shift responsibility for any personal decisions on to that religion.
Be careful, therefore, to take part only in the one Eucharist; for there is only one Flesh of our Lord Jesus Christ and one cup to unite us with His Blood.
I am honorary President of the American Humanist Society, having succeeded the late, great science fiction writer Isaac Asimov in that utterly functionless capacity. We Humanists behave as well as we can, without any rewards or punishments in an Afterlife.
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