Brian Greene Theory Quotations

I do feel strongly that string theory is our best hope for making progress at unifying gravity and quantum mechanics.

Very much, string theory is simply a work in progress. What we are inching toward every day are predictions that within the realm of current technology we hope to test. It's not like we're working on a theory that is permanently beyond experiment. That would be philosophy.

One of the strangest features of string theory is that it requires more than the three spatial dimensions that we see directly in the world around us. That sounds like science fiction, but it is an indisputable outcome of the mathematics of string theory.

If the theory turns out to be right, that will be tremendously thick and tasty icing on the cake.

I'd say many features of string theory don't mesh with what we observe in everyday life.

A unified theory would put us at the doorstep of a vast universe of things that we could finally explore with precision.

Supersymmetry is a theory which stipulates that for every known particle there should be a partner particle. For instance, the electron should be paired with a supersymmetric 'selectron,' quarks ought to have 'squark' partners, and so on.

Falsifiability for a theory is great, but a theory can still be respectable even if it is not falsifiable, as long as it is verifiable.

String theory is not the only theory that can accommodate extra dimensions, but it certainly is the one that really demands and requires it.

I can assure you that no string theorist would be interested in working on string theory if it were somehow permanently beyond testability. That would no longer be doing science.

The full name of string theory is really superstring theory. The 'super' stands for this feature called supersymmetry, which, without getting into any details, predicts that for every known particle in the world, there should be a partner particle, the so-called supersymmetric partner.

The funny thing is, I sometimes get the impression that some people outside of the field think that there's some element of security that we have in working on a theory that hasn't made any predictions that can be proven false. In a sense, we're working on something unfalsifiable.

I’ve spent something like 17 years working on a theory for which there is essentially no direct experimental support.