Basil of Caesarea's Trinitarian thought changed in the 360s, and the dates of his Trinitarian works, especially ep. 9 and Contra Eunomium determine the nature of the change. Most have dated these works such that Basil must be judged at least inconsistent if not duplicitous. The evidence recon- sidered, though, yields a date early in the 360s for both ep. 9 and Contra Eunomium. Since it cannot be determined which came first, Basil should be presumed consistent.