Psychologism is, I believe, correct only in so far as it insists upon what may be called 'methodological individualism' as opposed to 'methodological collectivism'; it rightly insists that the 'behaviour' and the 'actions' of collectives, such as states or social groups, must be reduced to the behaviour and to the actions of human individuals. But the belief that the choice of such an individualist method implies the choice of a psychological method is mistaken.
Interpretation
This quote discusses the distinction between individual actions and collective behaviors, emphasizing the importance of methodological individualism.
In this quote, Karl Popper argues for the importance of understanding social behaviors by reducing them to the actions and decisions of individuals. He warns against conflating individualist methods with psychological methods, highlighting that while individual actions are crucial for understanding collectives, this does not necessitate a psychological approach.
In practice
In a lecture on social theory, one might quote Popper to highlight the importance of individual decision-making in group dynamics.
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.
Having raised humanity above the beastly level of survival struggles, we will now aim to upgrade humans into gods and turn Homo sapiens into Homo deus.
We hold these truths to be self-evident: that all men and women are created equal.
The tiniest event can tear a hole in the grey curtain of reaction which has marked the horizons of possibility under capitalist realism. From a situation in which nothing can happen, suddenly anything is possible again.
To experience real agony is something hard to write about, impossible to understand while it grips you; you're frightened out of your wits, can’t sit still, move, or even go decently insane.
Error indeed has often prevailed by the assistance of power or force. Truth is the proper and sufficient antagonist to error.
All rulers in all ages have tried to impose a false view of the world upon their followers.
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