A Quote by Edsger Dijkstra

The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise. — © Edsger Dijkstra
The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.
The process of philosophizing, to my mind, consists mainly in passing from those obvious, vague, ambiguous things, that we feel quite sure of, to something precise, clear, definite, which by reflection and analysis we find is involved in the vague thing that we start from, and is, so to speak, the real truth of which that vague thing is a sort of shadow.
Evolution ... is really two theories, the vague theory and the precise theory. The vague theory has been abundantly proved.... The precise theory has never been proved at all. However, like relativity, it is accepted on faith.... On getting down to actual details, difficulties begin.
...A strange art – music – the most poetic and precise of all the arts, vague as a dream and precise as algebra.
Frequent elections are unquestionably the only policy by which this dependence and sympathy can be effectually secured. But what particular degree of frequency may be absolutely necessary for the purpose, does not appear to be susceptible of any precise calculation; and must depend on a variety of circumstances with which it may be connected. Let us consult experience, the guide that ought always to be followed, whenever it can be found.
Everyone is looking for a purpose in life. The reason we all go to the cinema, or online, is because we haven't found a purpose yet. We are always wondering why we're here. But I've learned that we have to create that purpose for ourselves. My purpose, which I finally found thanks to social media, is helping all of these people find their purpose.
Far better an approximate answer to the right question, which is often vague, than the exact answer to the wrong question, which can always be made precise.
We had a mission at PayPal - which was to create a new financial system, a new world currency, and we failed. We were a financial success, but we didn't succeed at the purpose of our company.
At a simple level, good is that which helps people-evil is that which hurts people. At a higher level, good is that which is in harmony with divine purpose-evil is that which is out of harmony with divine purpose.
The beauty of physics lies in the extent which seemingly complex and unrelated phenomena can be explained and correlated through a high level of abstraction by a set of laws which are amazing in their simplicity.
Some people are always critical of vague statements. I tend rather to be critical of precise statements; they are the only ones which can correctly be labeled wrong.
Some people are always critical of vague statements. I tend rather to be critical of precise statements; they are the only ones which can correctly be labeled 'wrong'.
And this vague little smile is my all purpose expression the meaning of which I will leave to your discretion.
The human language, as precise as it is with its thousands of words, can still be so wonderfully vague.
Everything is vague to a degree you do not realize till you have tried to make it precise.
Thoughts give birth to a creative force that is neither elemental nor sidereal. Thoughts create a new heaven, a new firmament, a new source of energy, from which new arts flow. When a man undertakes to create something, he establishes a new heaven.
The increased abstraction in mathematics that took place during the early part of this century was paralleled by a similar trend in the arts. In both cases, the increased level of abstraction demands greater effort on the part of anyone who wants to understand the work.
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