Theory Quotes

2628 Theory quotes by 1622 unique authors

Some theories are good for nothing except to be argued about. — Georg C. Lichtenberg
Socrates thought and so do I that the wisest theory about the gods is no theory at all. — Michel de Montaigne
It takes enormous effort to avoid all theories and just see. — Michael Crichton
It is not enough for theory to describe and analyze, it must itself be an event in the universe it describes. — Jean Baudrillard
I have a theory that the only original things we ever do are mistakes. — Billy Joel
Good tests kill flawed theories; we remain alive to guess again. — Karl Popper
A theory is the more impressive the greater is the simplicity of its premises, the more different are the kinds of things it relates and… — Albert Einstein
My theory about creativity is that the more money one has, the more creative one can be. — Robert Mapplethorpe
All political theories assume, of course, that most individuals are very ignorant. Those who plead for liberty differ from the rest in that they include… — Friedrich August von Hayek
Thus the criminal ceases to be a person, a subject of rights and duties, and becomes merely an object on which society can work. And… — C.S. Lewis
Christianity is not a political theory. It is not even a cultural theory. It is, at its root, all about changing the heart of each… — Ravi Zacharias
It would take a civilization far more advanced than ours, unbelievably advanced, to begin to manipulate negative energy to create gateways to the past. But… — Michio Kaku
When you're operating on uninvestigated theories of what's going on and you aren't even aware of it, you're in what I call "the dream." Often… — Byron Katie
[T]he theory of output as a whole, which is what the following book purports to provide, is much more easily adapted to the conditions of… — John Maynard Keynes
Gradualism in theory is perpetuity in practice. — William Lloyd Garrison
In this sense, the theory of the Communists may be summed up in the single sentence: Abolition of private property. - Manifesto of the Communist… — Karl Marx
Even mistaken hypotheses and theories are of use in leading to discoveries. This remark is true in all the sciences. The alchemists founded chemistry by… — Claude Bernard
For chemistry is no science form'd à priori; 'tis no production of the human mind, framed by reasoning and deduction: it took its rise from… — Herman Boerhaave
The lessons of science should be experimental also. The sight of a planet through a telescope is worth all the course on astronomy; the shock… — Ralph Waldo Emerson
Later scientific theories are better than earlier ones for solving puzzles in the often quite different environments to which they are applied. That is not… — Thomas Kuhn
The theory of the method of knowing which is advanced in these pages may be termed pragmatic. ... Only that which has been organized into… — John Dewey
Quantum mechanics is certainly imposing. But an inner voice tells me that this is not yet the real thing. The theory says a lot, but… — Albert Einstein
The most practical solution is a good theory. — Albert Einstein
A sound Physics of the Earth should include all the primary considerations of the earth's atmosphere, of the characteristics and continual changes of the earth's… — Jean-Baptiste Lamarck
In-depth studies have an influence on general ideas, whereas theories, in turn, in order to maintain themselves, push their spectators to search for new evidence.… — Louis Agassiz

Who Wrote These Theory Quotes

1,622 authors contributed a total of 2,628 Theory Quotes, led by these top contributors: