Courage is never to let your actions be influenced by your fears.
In my youth I regarded the universe as an open book, printed in the language of equations, whereas now it appears to me as a text written in invisible ink, of which in our rare moments of grace we are able to decipher a small segment.
Interpretation
What this quote means
This quote reflects the shift in perception from seeing the universe as entirely knowable through logic to recognizing the limitations of human understanding.
Arthur Koestler's quote illustrates the evolution of his understanding of the universe from a simplistic view where everything can be understood through equations and logic, to a more nuanced perspective where much remains mysterious and hidden. He suggests that while knowledge is attainable, it is only a fraction of the greater unknown, and only in rare moments of clarity do we grasp insights that may reveal deeper truths about existence.
Themes
In practice
Example use cases
This quote can be used in a lecture about the philosophy of science.
More from Arthur Koestler
All quotes →History knows no scruples and no hesitation. Inert and unnering flows towards her goal. History knows herway. She makes no mistakes.
If one looks with a cold eye at the mess man has made of his history, it is difficult to avoid the conclusion that he has been afflicted by some built-in mental disorder which drives him towards self-destruction. Murder within the species on an individual or collective scale is a phenomenon unknown in the whole animal kingdom, except for man, and a few varieties of ants and rats.
Space-ships and time machines are no escape from the human condition. Let Othello subject Desdemona to a lie-detector test; his jealousy will still blind him to the evidence. Let Oedipus triumph over gravity; he won't triumph over his fate.
The real achievement in discoveries... is seeing an analogy where no one saw one before... The essence of discovery is that unlikely marriage of cabbages and kings — of previously unrelated frames of reference or universes of discourse — whose union will solve the previously insoluble problem.
The most persistent sound which reverberates through man's history is the beating of war drums.
Similar quotes
If there is a sort of national American emotion I would call it optimism. If there is an English one I would call it embarrassment - not even pessimism - just sheer shame, embarrassment and confusion.
Things like that happen all the time in this great big world of ours. It's like taking a boat out on a beautiful lake on a beautiful day and thinking both the sky and the lake are beautiful. So stop eating yourself up alive. Things will go where they're supposed to go if you just let them take their natural course.
It is impossible to survive in a prolonged state of reality, at least for human beings. We spend a good part of our lives dreaming, especially when we're awake.
When you're Black in the United States, you grudgingly grow accustomed to having people deny that your existence is integral to everything that makes this country what it is.
I am not a religious man. I have not attended a service for many years. But I do believe in God. My own practice of religion, you could say, it a nonpractice. I personally feel that it's just as worthy on a weekend to rake the lawns of an elderly neighbor or to climb a mountain and marvel at the beauty of this land we live in as it is to sing hosannas or go to Mass. In other words, I think every many finds his own church- and not all of them have four walls - Judge Haig (Page 399)
Leave the matter of religion to the family altar, the church, and the private school, supported entirely by private contributions. Keep the church and state forever separate.