“For me it is so clear that measurement is irrelevant. I mean that the word 'measurement' should not be in the theory.”— John Stewart Bell
“The beauty of a theory is that it can be applied to a wide range of phenomena.”— Rudolph A. Marcus
“Part of the bargain of being a scientist is that you're not supposed to have an emotional attachment to your theories.”— Hal Abelson
“What we call the elements of art are not just abstract components; they are forces, vectors that push and pull.”— Rudolf Arnheim
“We have to learn again that science without contact with experiments is an enterprise which is likely to go completely astray into imaginary conjecture.”— Hannes Alfvén
“There is no such thing as an innocent reading, we must say what reading we are guilty of.”— Louis Althusser
“It seems likely that the electron is, in a certain sense, a simple particle and not a complex structure.”— Carl David Anderson
“Social choice theory is concerned with the relationship between individual preferences and collective decisions.”— Kenneth Joseph Arrow
“The idea that there are 'systems' which are represented by state vectors, and 'apparatus' which are not, is surely something that we must grow out of.”— John Stewart Bell
“For those who believe that the earth is the centre of the world and the sun revolves around it, there is no need to be afraid of the accusation of novelty.”— Tycho Brahe
“You can’t hire a data scientist and ask them to find insights. You have to have a theory about what you are trying to do.”— Clayton Christensen
“A theory has only the alternative of being right or wrong. A model has a third possibility: it may be right, but irrelevant.”— Manfred Eigen