“Often you'll see the same three or four data items together in lots of places: fields in a couple of classes, parameters in many method signatures. Bunches of data that hang around together really ought to be made into their own object.”

“The fact must be expressed as data, but there is a problem in that the correct data is difficult to catch. So that I always say "When you see the data, doubt it!" "When you see the measurement instrument, doubt it!… For example, if the methods such as sampling, measurement, testing and chemical analysis methods were incorrect, data… to measure true characteristics and in an unavoidable case, using statistical sensory test and express them as data.”

“Information is just bits of data. Knowledge is putting them together. Wisdom is transcending them.”

“In the Vienna of the late 1020s and 1930s there throve an internationally famous philosophical bunch called the logical positivists. …They said that a key ingredient of knowledge was "sense data," and proclaimed emphatically, in the words of… J. S. L. Gilmour, that sense data are "objective and unalterable."”

“Data is transformed into graphics to understand. A map, a diagram are documents to be interrogated. But understanding means integrating all of the data. In order to do this it’s necessary to reduce it to a small number of elementary data. This is the objective of the “data treatment” be it graphic or mathematic.”

“Object-oriented domain analysis seeks to identify reusable items localized around objects e. g., classes, instances, systems of interacting objects, and kits.”

“When the theory performs well you also think, “Are there parallel results in naturally occurring field data?” You look for coherence across different data sets because theories are not specific to particular data sources. Such extensions are important because theories often make specific assumptions about information and institutions which can be controlled in the laboratory, but which may not accurately represent field data generating situations. Testing theories on the domain of their assumptions is sterile unless it is part of a research program concerned with extending the domain of applications of theory to field environments”

“In restaurants, the duration of silence between couples is too often proportionate to the length of their life together.”

“It amazes me how people are often more willing to act based on little or no data than to use data that is a challenge to assemble.”

“I develop a method for the direct and expeditious comparison of the thermo-couple with the air thermometer. A comparison of the data… gives me a criterion of the accuracy with which the data in the region of high temperature are known. This indirect method… is not apparently as rigorous as their direct evaluation by means of the air thermometer; but the indirect method requires much smaller quantities of substance and may be conveniently extended to much higher temperatures. Taking all liabilities to error into consideration, its inferior accuracy is only apparent.”