Everything in nature is the result of fixed laws.
Charles DarwinRead
So in regard to mental qualities, their transmission is manifest in our dogs, horses and other domestic animals. Besides special tastes and habits, general intelligence, courage, bad and good tempers. etc., are certainly transmitted.
Interpretation
Darwin suggests that mental traits and characteristics can be inherited in domestic animals, similar to physical traits.
In this quote, Charles Darwin highlights the concept of hereditary transmission of mental qualities in domestic animals such as dogs and horses. He emphasizes that not only specific tastes and habits but also broader traits like intelligence, courage, and temperament can be passed down through generations, illustrating the complexity of genetic inheritance beyond mere physical attributes.
In practice
In a discussion about animal breeding, one might reference this quote to emphasize the importance of selecting for mental characteristics.
Everything in nature is the result of fixed laws.
The highest possible stage in moral culture is when we recognize that we ought to control our thoughts.
I am quite conscious that my speculations run beyond the bounds of true science....It is a mere rag of an hypothesis with as many flaw[s] & holes as sound parts.
We cannot fathom the marvelous complexity of an organic being; but on the hypothesis here advanced this complexity is much increased. Each living creature must be looked at as a microcosm--a little universe, formed of a host of self-propagating organisms, inconceivably minute and as numerous as the stars in heaven.
I have called this principle, by which each slight variation, if useful, is preserved, by the term of Natural Selection.
we are always slow in admitting any great change of which we do not see the intermediate steps
Many discoveries are reserved for ages still to come . . . . Our universe is a sorry little affair unless it has in it something for every age to investigate.
Bertrand Russell had given a talk on the then new quantum mechanics, of whose wonders he was most appreciative. He spoke hard and earnestly in the New Lecture Hall. And when he was done, Professor Whitehead, who presided, thanked him for his efforts, and not least for 'leaving the vast darkness of the subject unobscured'.
I think the appropriate response for a physicist is: 'I do not find the concept of God very interesting, because I cannot test it.'
It will be another million years, at least, before we understand the primes.
The history of astronomy is a history of receding horizons.
We owe a lot to the Indians, who taught us how to count, without which no worthwhile scientific discovery could have been made.
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