It has always seemed to me extreme presumptuousness on the part of those who want to make human ability the measure of what nature can and knows how to do, since, when one comes down to it, there is not one effect in nature, no matter how small, that even the most speculative minds can fully understand.
Long experience has taught me this about the status of mankind with regard to matters requiring thought: the less people know and understand about them, the more positively they attempt to argue concerning them, while on the other hand to know and understand a multitude of things renders men cautious in passing judgment upon anything new.
Interpretation
What this quote means
People tend to argue confidently about things they know little about, while greater knowledge leads to caution in judgments.
This quote by Galileo Galilei reflects on human behavior regarding knowledge and opinions. It suggests that those who lack understanding often exhibit the most confidence in their arguments, while those with a deeper comprehension of a multitude of subjects tend to be more reserved and thoughtful when faced with new ideas. This highlights the paradox that ignorance can breed certainty, whereas knowledge fosters humility and reflection.
Themes
In practice
Example use cases
In a debate on climate change, one might quote Galileo to illustrate how uninformed opinions can overshadow informed discourse.
More from Galileo Galilei
All quotes →We must say that there are as many squares as there are numbers.
Science proceeds more by what it has learned to ignore than what it takes into account.
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Philosophy is written in this grand book, the universe, which stands continually open to our gaze. But the book cannot be understood unless one first learns to comprehend the language and read the letters in which it is composed.
That sculpture is more admirable than painting for the reason that it contains relief and painting does not is completely false. ... Rather, how much more admirable the painting must be considered, if having no relief at all, it appears to have as much as sculpture!
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