A Quote by Philip Crosby on certainty, change, planning, and world

If anything is certain, it is that change is certain. The world we are planning for today will not exist in this form tomorrow.

Philip Crosby

Source: Reflections on Quality

Contributed by: Zaady

A Quote by Francesco Petrarca Petrarch on books, certainty, desires, familiarity, inspiration, and life

Books never pall on me. They discourse with us, they take counsel with us, and are united to us by a certain living chatty familiarity. And not only does each book inspire the sense that it belongs to its readers, but it also suggests the name of others, and one begets the desire of the other.

Petrarca Petrarch (1304 - 1374)

Contributed by: Zaady

A Quote by Percy Williams Bridgman on certainty and determination

To find the length of an object, we have to perform certain physical operations. The concept of length is therefore fixed when the operations by which length is measured are fixed that is, the concept of length involves as much as and nothing more than the set of operations by which length is determined.

Percy Bridgman (1882 - 1961)

Source: The Logic of Modern Physics, 1927

Contributed by: Zaady

A Quote by Pelham Grenville Wodehouse on certainty and feeling

While not exactly disgruntled, he was far from feeling gruntled. He spoke with a certain what-is-it in his voice, and I could see that, if not actually disgruntled, he was far from being gruntled.

Pelham Grenville Wodehouse (1881 - 1975)

Source: The Code of the Woosters

Contributed by: Zaady

A Quote by Paul R. Halmos on authors, certainty, and theory

I remember one occasion when I tried to add a little seasoning to a review, but I wasn't allowed to. The paper was by Dorothy Maharam, and it was a perfectly sound contribution to abstract measure theory. The domains of the underlying measures were not sets but elements of more general Boolean algebras, and their range consisted not of positive numbers but of certain abstract equivalence classes. My proposed first sentence was: "The author discusses valueless measures in pointless spaces."

Paul R. Halmos

Source: I want to be a Mathematician, Washington: MAA Spectrum, 1985, p. 120.

Contributed by: Zaady

A Quote by Paul Klee on beauty, certainty, darkness, existence, relatives, shame, and women

Beauty is as relative as light and dark. Thus, there exists no beautiful woman, none at all, because you are never certain that a still far more beautiful woman will not appear and completely shame the supposed beauty of the first.

Paul Klee (1879 - 1940)

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A Quote by P. Langley on certainty, concern, nature, philosophy, and science

The concern that the philosophy of science has had for the certainty and uniqueness of inductions stems from a misconception of the nature of science.

P. Langley

Source: Scientific Discovery, 1987, p17

Contributed by: Zaady

A Quote by Orison Swett Marden on certainty, day, labor, men, poets, reason, superiority, and talent

It is certain that the greatest poets, orators, statesmen, and historians, men of the most brilliant and imposing talents, have labored as hard, if not harder, than day laborers; and that the most obvious reason why they have been superior to other men is that they have taken more pains than other men.

Orison Swett Marden (1850 - 1924)

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A Quote by Oliver Wendell Holmes on certainty

Certitude is not the test of certainty. We have been cocksure of many things that are not so.

Oliver Wendell Holmes (1809 - 1894)

Source: G. Simmons Calculus Gems, New York: McGraw Hill Inc., 1992.

Contributed by: Zaady

A Quote by Oliver Goldsmith on boredom, certainty, day, disaster, faults, jokes, kindness, laughter, learning, and love

Well had the boding tremblers learn'd to trace The day's disasters in his morning face; Full well they laugh'd with counterfeited glee At all his jokes, for many a joke had he; Full well the busy whisper circling round Convey'd the dismal tidings when he frown'd. Yet was he kind, or if severe in aught, The love he bore to learning was in fault; The village all declar'd how much he knew, 'Twas certain he could write and cipher too.

Oliver Goldsmith (1728 - 1774)

Source: The Deserted Village

Contributed by: Zaady

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