How is it not your sentence? Even if other people have said it you wrote it and it is not a quotation from someone else. In fact you even wrote (quotation from you) “There I’ve said it”. So in every sense of the meaning, it is your sentence. You constructed it and you wrote it. Unless you quote somebody those are your words.

I am very much beginning to understand that English is probably not your primary language so I apologize for raking you over the coals for such grammatical and linguistic errors, I’m usually much more understanding of people learning English. The problem is your English appears to be pretty good so misuse of a fairly common word like “artificial” is unexpected