Пожалуйста, кто-нибудь, помогите перевести предложение!

  • What was of prime importance, however, in
    author's view, was that when one assessed the historicity of chronistic
    materials, one should make a clear distinction between a tradition
    describing a historical event and the historical kernel of this tradition,
    that is to say, between what the author had taken from his sources and
    what seemed to be characteristic of him in terms of his conceptual
    world and manners of expression.

    Или хотя бы его вторую часть:
    between what the author had taken from his sources and
    what seemed to be characteristic of him in terms of his conceptual
    world and manners of expression.

  • между тем, что автор взял из своих источников , и тем, что казалось таким характерным для него в смысле его концептуального мира и манерой выражения.