From what you said in your question, it sounds as if you are anticipating his needs. Could be he's not speaking because there really is no need for him to verbalize what he wants. If you meet his needs before he communicates them, why should he speak? This reminds me of the old joke about the boy who never spoke a word until he was 11. Then one night at dinner he asked to have the salt passed. After his parents recovered from the shock, they asked him, "You could speak all along? Why didn't you ever say anything?". He replied, "Up until now everything's been fine,". Try encouraging your son to tell you what he needs verbally. It will be difficult for you at first, but best for him in the long run.
The parents should not do anything. Human children are hardwired by nature to learn language. However, children learn at different rates. Don't worry, one day you'll be asking how to keep him quiet. ;)
What age is your child? Babies don't speak sometimes for a few years, but if it making vocal sounds at all? If it is I wouldn't worry too much. If it's not making vocal sounds then I would get it checked by a doctor.
Well first we need to know the age and what you consider talking. If they are making sounds and are old enough to enunciate but not doing so, I would get their hearing checked. If all other avenues have been exhausted, take the child to a Speech Therapist. Good luck. :)
My son is 22 months old and is only saying 26 different words... The Dr told me at 18 months that he was very far behind... My son tells me in other ways other than "verbal" what he wants or needs... It all depends upon the child... But even if the child is not speaking typical verbal words, I'm sure he/she is communicating by other means... Each child is different... But more information would help us help you in this case....
You do not mention the age of the child or whether they make any sounds at all or react to noise. You should have the child undergo testing for peace of mind. If something is wrong you can start correcting it and if everything is fine you can relax. Good luck.
Some children take awhile to actually speak but that doesn't mean that they aren't learning. Typically children who speak later will speak in full sentences right off the bat. I knew someone who didn't speak until she was 4, when suddenly she told her mom that she was hot and wanted to go inside and get a glass of water.