You, who know better than any one the motley world of cosmopolites, understand why I have confined myself to painting here only a fragment of it. That world, indeed, does not exist, it can have neither defined customs nor a general character. It is composed of exceptions and of singularities.
Paul BourgetRelated topics
character fragment general nor customsRelated quotes
The development (rather than the history) of operations research as a science consists of the development of its methods, concepts, and techniques. Operations research is neither a method nor a technique; it is or is becoming a science and as such is defined by a combination of the phenomena it studies.
Russell L. Ackoff
General principles are not the less true or important because, from their nature they elude immediate observation; they are like the air, which is not the less necessary because we neither see nor feel it, or like that secret influence which binds the world together and holds the planets in their orbits.
William Hazlitt