The scientist knows very well ...

The scientist knows very well that he is approaching ultimate truth only in an asymptotic curve and is barred from ever reaching it; but at the same time he is proudly aware of being indeed able to determine whether a statement is a nearer or a less near approach to the truth.
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 Konrad Lorenz

Quotes from the same author

All scientific knowledge to which man owes his role as master of the world arose from playful activities.
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 Konrad Lorenz
The attitude of the true scientist towards the real limits of human understanding was unforgettably impressed on me in early youth by the obviously unpremeditated words of a great biologist; Alfred Kuhn finished a lecture to the Austrian Academy of Science with Goethe 's words, "It is the greatest joy of the man of thought to have explored the explorable and then calmly to revere the inexplorable." After the last word he hesitated, raised his hand in repudiation and cried, above the applause, "No, not calmly, gentlemen; not calmly!
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 Konrad Lorenz
I see the creative accomplishments of which highly gifted humans are capable as special cases of the universal creative process, that game played by everyone against everyone else, from which wells up all that has never been before.
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 Konrad Lorenz
The fidelity of a dog is a precious gift demanding no less binding moral responsibilities than the friendship of a human being.
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 Konrad Lorenz
There is no faith which has never yet been broken, except that of a truly faithful dog
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 Konrad Lorenz