The Greek philosopher Protagoras.
Posiedon was the Greek god of the sea, but he was said to be creator of horses.
Voltaire, a French philosopher, is often attributed with this quote.
John Locke
Aphrodite
The Greek philosopher who said "I think, therefore I am" was René Descartes, a French philosopher and mathematician. This statement is more commonly associated with Descartes' philosophy rather than Greek philosophers.
The philosopher who stated "I think therefore I am" is René Descartes. This famous philosophical quote is from his work "Discourse on the Method" published in 1637.
René Descartes.
It was Rene Descartes.I think therefore I am (Cognito Ergo Sum).
I suppose that any Greek philosopher did not say so.
This philosophical statement meaning "I think therefore I am" was said by Rene Descartes.
The Greek philosopher Protagoras.
René Descartes stated "Cogito, ergo sum" which translates to "I think, therefore I am." He is known for his ideas on skepticism, dualism, and the mind-body problem.
René Descartes, the French philosopher (and mathematician, scientist and writer), is considered the "Father of Modern Philosophy" by most. This is arguably his most famous quote, but it's an "out-take" of the "original" quote. In the form of "cogito ergo sum" (Latin for "I think, therefore I am"), it is widely known. It was actually set down as "dubito, ergo cogito, ergo sum" (Latin: "I doubt, therefore I think, therefore I am"). Wikipedia has an article where you can find particulars, and a link is provided.
Thalamexis
It was the blind philosopher Skotadios of Nieta.
It was the philosopher Thales.