We had become so accustomed to think of λ as an essentially positive quantity, and of a finite world with positive curvature, that the idea of investigating the possibility of solutions with negative or zero values of λ and of the curvature simply did not arise. But when this oversight was corrected, it appeared at once that in the non-static case both λ and the curvature need not be positive, but can be negative or zero quite as well.
Willem de SitterRelated topics
case curvature idea need once oversight possibility quite well zeroRelated quotes
To the pure geometer the radius of curvature is an incidental characteristic - like the grin of the Cheshire cat. To the physicist it is an indispensable characteristic. It would be going too far to say that to the physicist the cat is merely incidental to the grin. Physics is concerned with interrelatedness such as the interrelatedness of cats and grins. In this case the "cat without a grin" and the "grin without a cat" are equally set aside as purely mathematical phantasies.
Arthur Eddington
Well, method is, it seems to me, a natural growth out of a need, and from a need the modern artist has found new ways of expressing the world about him. I happen to find ways that are different from the usual techniques, which seems a little strange at the moment, but I don't think there's anything very different about it. I paint on the floor and this isn't unusual – the Orientals did that.
Jackson Pollock
Judge and prosecutor had hammered it home that Lady Chatterly was an immoral woman, that she had had sexual relations before marriage, that she had committed adultery under her husband's roof; as if these charges somehow disqualified her from participation in serious literature. Indeed, there were long periods of the trial during which an outsider might well have assumed that a divorce case was being heard.
Kenneth Tynan
Hyper-selectionism has been with us for a long time in various guises; for it represents the late nineteenth century's scientific version of the myth of natural harmony-all is for the best in the best of all possible worlds (all structures well designed for a definite purpose in this case). It is, indeed, the vision of foolish Dr. Pangloss, so vividly satirized by Voltaire in Candide-the world is not necessarily good, but it is the best we could possibly have.
Stephen Jay Gould
To care for the quarrels of the past, to identify oneself passionately with a cause that became, politically speaking, a losing cause with the birth of the modern world, is to experience a kind of straining against reality, a rebellious nonconformity that, again, is rare in America, where children are instructed in the virtues of the system they live under, as though history had achieved a happy ending in American civics.
Mary McCarthy