Peter Giles

“ When the Romans adopted the Greek alphabet they took over the symbols with their Greek values. But Greek had no sound corresponding to the Latin f, for φ was pronounced p-h, like the final sound of lip in ordinary English or the initial sound of pig in Irish English. ”

“ Though uncertain, therefore, it seems not impossible that the original symbol of the Phoenician alphabet, which was a consonant like the English w, may have been differentiated in Greek into two symbols, one indicating the consonant value w and retaining the position of the Phoenician consonant Vau, the other having the vowel value u, which ultimately most dialects changed to a modified sound like French u or German ü. Be this as it may, the value of the symbol Ϝ in Greek was w, a bilabial voiced sound, not the labio-dental unvoiced sound which we call f. ”