It is wrong for a man to say that he is certain of the objective truth of any proposition unless he can produce evidence which logically justifies that certainty.
Thomas HuxleyRead
A man has no reason to be ashamed of having an ape for his grandfather. If there were an ancestor whom I should feel shame in recalling it would rather be a man who plunges into scientific questions with which he has no real acquaintance, only to obscure them by an aimless rhetoric.
Interpretation
Embracing our origins is more admirable than pretending to understand complex topics without true knowledge.
In this quote, Thomas Huxley emphasizes that one should not feel ashamed of their origins, regardless of how primitive they may seem, such as having an ape as an ancestor. Instead, he criticizes those who engage in discussions about scientific matters without a genuine understanding, as their misguided rhetoric can mislead others and detract from the pursuit of true knowledge.
In practice
This quote can be used in a lecture about the importance of understanding our scientific origins.
It is wrong for a man to say that he is certain of the objective truth of any proposition unless he can produce evidence which logically justifies that certainty.
The child who has been taught to make an accurate elevation, plan, and section of a pint pot has had an admirable training in accuracy of eye and hand.
Let us have "sweet girl graduates" by all means. They will be none the less sweet for a little wisdom; and the "golden hair" will not curl less gracefully outside the head by reason of there being brains within.
The secret of genius is to carry the spirit of childhood into maturity.
It is the first duty of a hypothesis to be intelligible.
Of the few innocent pleasures left to men past middle life, the jamming of common sense down the throats of fools is perhaps the keenest.
Quantum physics thus reveals a basic oneness of the universe.
Imagine the progress that could be made by gathering together the world's scientists, engineers, physicians, oncologists, epidemiologists and more in a super-team effort to end cancer.
No astrophysicist would deny the possibility of life. I think we're not creative enough to imagine what life would be like on another planet. Show me a dead alien. Better yet, show me a live one!
It was one time when people thought the value of the fine structure constant was important. Now of course it's still important, of course, as a practical matter,but we now know that the value it has is a function, that in any fundamental theory you derive the fine structure constant as a function of all sorts of mass ratios and so on and it's not really that fundamental.
So far as physics is concerned, time's arrow is a property of entropy alone.
There is no energy crisis, only a crisis of ignorance.
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