He's not a 'Pragmatist' as that term is generally used. He is far ahead of James and Dewey, who probably don't deserve association with him. I'm sure Orthodox Christians would have been little more sympathetic than Unitarians were but in this case the culprits were the Harvard Unitarians. The words themselves are a clich . If Peirce stayed on the farm, it was because he was happy being eremitical.
All great work is done in solitude.
Probably, James's was conscience money. Peirce is on to Trinitarian formulation, which is primal. The Harvard folk were Unitarian. There are grades of spiritual discipline just as there are grades of school and experience. Ultimately, we are all enrolled in the University of Life, until we quit the body.