Talking to my old cat

Animals are human's friends. I believe that they have their own language, but we just can't understand it. If animals can talk, do you think they will want to say: " Why we have to know your language? You should learn our language." I hope they have an international language, just like we have English.
And I have had a cat for 12 years. If he can talk, it will be great. Because I have a chance to know what he is thinking, I can take care of him better. And I think of my cat as my brother, so I want to share and listen to his problems. If I can talk to my cat, I have some questions for him. First of all, I want to know how he can be so smart and sensitive cat. A cat usually is not so sensitive, just as we know a dog is always a better friend than a cat. Whenever I feel sad and want to cry, he always comes and sits in my lap. I am curious how he can know that I am sad, so he always comes and sits in my lap at that time. May be he is an old cat, and Vietnamese usually say that an old cat will turn out to be a fox. It means when your cat gets older, he or she will get smarter. Besides that, my cat has a lot of female cat friends that come to my house to find him quite often. So I want to know what kind of female cat is his ideal girlfriend. And I live far away from home now, so I wonder he misses me or not. I miss you so much, my brother. If you can talk, just use skype to talk with me. ^^ Oh, English or Vietnamese, please.
I read Sherry and Quynh's posts.