"In the dimension of describing and explaining the world, science is the measure of all of things. Of what is that it is, and of what is not that it is not"
[1]
The opening qualification is important but usually left out.
Bibliography
[1]
W. Sellars et al., “Empiricism and the philosophy of mind,”Minnesota studies in the philosophy of science, vol. 1, no. 19, pp. 253–329, 1956.