The poster known as Bullet wrote;
Do not tell me that you hope he will be cured, because then you will tell me he will lose his fantastic memory, the way he can whizz through a jigsaw puzzle after only just seeing it, the way he can recite whole poems and stories, even if he hasn't heard them in a while.
Do not tell me that he will grow out of it, because then he will lose the way he kisses with his forehead and plays with my hair and touches my face, not because he wants sweets, or to stay up for a bit longer, but because he loves me, nothing more complicated than that.
Do not say he cannot learn, because he perceives the world in a different way to you. See him remember places he's not been to in months and watch him read numbers, know colours, shapes and letters and then dare to say he cannot learn, because he can't ask for a drink.
Do not demand vocalised speech for him as the be all and end all, let it be his choice and give him other options. Do not presume that silence means compliance, that a failure to say if something is wrong means that everything is right. Let him sign, draw, write, talk, whatever he needs to get his point across and never, ever belittle him for not opening his mouth, or for opening his mouth and communicating in a way that may seem strange to you.
Do not presume to think his worth can be measured on how social he is, how much peer pressure he succumbs to as he gets older, how much he is able to network. As he grows, let his worth be measured on the respect he gives others, on his sense of justice and mercy, on his willingness to help those in need if he is capable of that help.
Do not take my smart, funny, affectionate little boy and try and mould him into your rigidly defined views of what is socially acceptable. Let him learn, let him develop and let him understand that his value in the world is as equal as yours.