... activity to display itself at an even more developed stage in the records of Rabbinical times. But this is by no means the case, for the Rabbinical references to letters in the beginning of the common era are few and far between. Polemic epistles make their appearance; but they are the letters of non-Jewish missionaries like Paul. This form of polemical writing possessed many advantages; the letters ... — The Book of Delight and Other Papers • Israel Abrahams