Whenever a theory appears to you as the only possible one, take this as a sign that you have neither understood the theory nor the problem which it was intended to solve.
Sentiment: NEGATIVE
I'm not sure what theory is, unless it's the pursuit of fundamental questions.
There can be theory but, you know, the problem is you've got to be able to test it. So theories are one thing, testing is another.
A mathematical theory is not to be considered complete until you have made it so clear that you can explain it to the first man whom you meet on the street.
The incorrectness and weaknesses of a theory cause other minds to formulate the problems more exactly and in this way scientific progress is made.
I don't think about a theory of everything when I do my research. And even if we knew the ultimate underlying theory, how are you going to explain the fact that we're sitting here? Solving string theory won't tell us how humanity was born.
There is no complete theory of anything.
A theory must be tempered with reality.
Theories, for me, are just about freeing your mind. It doesn't mean the theory is going to work like a scientific theory works. It's about freeing your mind and making you think a different way.
No theory changes what it is a theory about; man remains what he has always been.
Never abandon a theory that explains something until you have a theory that explains more.