The Roots of Pragmatism

Today's philosophical quote comes from Charles Sanders Peirce (1839-1914), the American philosopher who first promoted the concept of pragmatism as a viable philosophical model (later to be embellished by William James and John Dewey, to name a couple of his followers). I think this statement sets up the foundation for their constructive ideas:

"All the progress we have made in philosophy,
that is, all that has been made since the Greeks,
is the result of that methodical skepticism
which is the first element of human freedom."