In The Matrix, who says the line 'He's beginning to believe'?

In The Matrix, Morpheus says, “He’s beginning to believe.”

The line comes near the end of the 1999 film. After Neo returns to the Matrix to rescue Morpheus, he confronts Agent Smith in a subway station. Rather than run, Neo turns and faces Smith, showing a new confidence in his ability to resist the simulated world.

Trinity asks what Neo is doing, and Morpheus answers that Neo is beginning to believe. The remark refers to Neo’s growing faith in himself and in the possibility that he may be the prophesied One. Moments later, Neo fights Smith, declares his identity, and begins displaying abilities beyond those of an ordinary human inside the Matrix.

The quote is sometimes misattributed to Trinity because she asks the preceding question. Cypher, Trinity, and Neo are all present in the story, but Morpheus is the speaker of this specific line.