from Kripke’s Naming and Necessity (1980):
If one was determining the referent of a name like ‘Glunk’ to himself and made the following decision, ‘I shall use the term “Glunk” to refer to the man that I call “Glunk”‘ this would get one nowhere. One had better have some independent determination of the referent of ‘Glunk’. This is a good example of a blatantly circular determination. Actually sentences like ‘Socrates is called “Socrates”‘ are very interesting and one can spend hours talking about their analysis. I actually did, once, do that. I won’t do that now, however, on this occasion. (See how high the seas of language can rise. And at the lowest points too.)