Context: Cell looking-back on how he came to be I think & absorbing the Cyborgs I think.
Cell: That is how I reached my perfect form. However, at the time, I still had not realized the ultimate strength that Dr. Gero was after. Dr. Gero's ambition wasn't about something [little], like defeating Son-Goku. It was to develop ultimate strength, with which to rule the world--the entire universe. And during this fight, I've come to understand that. That is to say, like Piccolo, having the ability to regenerate, so long as there is still a tiny nucleus, along with the ability of the Saiyans to power-up even greater than before, after being saved from the brink of death, as well as having a merciless, cold-blooded, unfeeling heart, like Freeza, put together, they all served as Dr. Gero calculated. [...] Perfect strength...It is beyond what I could have imagined.