Economic theory is the most prestigious subject of instruction and study. Agricultural economics, labor economics and marketing are lower caste fields of study.
Scientific theory is a contrived foothold in the chaos of living phenomena.
Christianity is not a theory or speculation, but a life; not a philosophy of life, but a life and a living process.
From the outset Maxwell's theory excelled all others in elegance and in the abundance of the relations between the various phenomena which it included.
Im very strongly in favor of the auteur theory.
The economists will have to revise their theories of value.
The electron is a theory. But the theory is so good we can almost consider them real.
The power of Christianity lies in its revelation in act, of that which Plato divined in theory.
When an economist says the evidence is "mixed," he or she means that theory says one thing and data says the opposite.
The theory I propose may therefore be called a theory of the Electromagnetic Field because it has to do with the space in the neighbourhood of the electric or magnetic bodies, and it may be called a Dynamical Theory, because it assumes that in the space there is matter in motion, by which the observed electromagnetic phenomena are produced.
We can invent as many theories we like, and any one of them can be made to fit the facts. But that theory is always preferred which makes the fewest number of assumptions.
The universe and the observer exist as a pair. I cannot imagine a consistent theory of the universe that ignores consciousness.
I have a theory that if you're famous more years than you're not famous, then you get a little nutty.
A theory is just a mathematical model to describe the observations.
Obama, startled that components of government behave as interest groups, seems utterly unfamiliar with public choice theory. It demystifies and de-romanticizes politics by applying economic analysis - how incentives influence behavior - to government.
For let us not underestimate the Christian: the Christian, false to the point of innocence, is far above the ape-regarding Christians, a well known theory of descent becomes a mere compliment.
Men follow their sentiments and their self-interest, but it pleases them to imagine that they follow reason. And so they look for, and always find, some theory which, a posteriori, makes their actions appear to be logical. If that theory could be demolished scientifically, the only result would be that another theory would be substituted for the first one, and for the same purpose.
[The theory of the firm] is exactly analogous to the analysis of the reactions of a consumer by means of indifferent curves. Indeed, a consumer is merely a 'firm' whose product is 'utility'.
You don't discard Newton. Newton becomes the limiting case of how you would apply Einstein's theories.
I think the next [21st] century will be the century of complexity. We have already discovered the basic laws that govern matter and understand all the normal situations. We don't know how the laws fit together, and what happens under extreme conditions. But I expect we will find a complete unified theory sometime this century. The is no limit to the complexity that we can build using those basic laws.