But with thanks to the Father, the Son and the Holy Ghost let me make an end to my letter, for, as the proverb has it, πᾶν μέτρον ἄριστον. Attributed to Cleobulus of Lindos.  Thales is credited with the injunction μέτρῳ χρῶ.  cf. my note on Theodoret, Ep. cli. p. 329.