Do you believe this phrase is correct, 'I think therefore I am'?

****Well, the conclusion is, by definition, correct: if "I think", then I must exist in order to think, hence I am.

 The Cogito contains two separate premise: 1) “There is a thought going on” and 2) these thoughts are attached to something called “me”. 

Even if we accept that I am thinking at all proves the fact I exist , it says nothing about what I am except a thinking thing and even that may go too far.

Descartes was incorrect to use the words ‘I think’ to be true to his sceptical approach he should have said ‘there are thoughts’ .

He made the assumption if their are thoughts there must be a thinker , this is presumptive , prehaps thoughts could exist independently of thinkers?

The ‘I’ in ‘I think’ could be the same as the ‘it’ in ‘it’s raining , which does not refer to anything 

Descartes argument is also circular ..... 

Leibniz on the Cogito.........

Descartes is trying to prove the ‘I’ exists, but his first ‘premise’ is “I doubt”. It is an invalid argument to assume the truth of the conclusion in one or more of the premises. As Leibniz wrote: “'I am thinking' is already to say 'I am' “