Eyes meet eyes!
Eyes are the mirror of the soul and it is quite true for cats. Cats will never delude you. Each time you cat is looking at you to understand what you want. If your cat has been looking at you for some seconds, then blinks and turns away, that means it recognizes you but doesn't invite you to communicate with it. Don't worry it's not rude! The pupils of the eye will say more. If they are dilated they seem to cry with fear. If you are not sure whether your cat is frightened or not, look at its pupils. Wide open eyes and dilated pupils mean that something awful is coming. If you cat acts aggressively, its pupil may turn to narrow slits.
Tail tells!
If you can read what the cat's tail is telling you, you will know what is on its mind. The tail could stick straight up. In this case it is used to demonstrate self-confidence and a sense of pride. Cats that carry their tails this way walk very pompously. When your cat is frightened, its tail looks like a bottle brush. If the tail is fluffy and looks bigger that it is, it signifies the mixture of false courage and fear.
Quick swings of the tail is a joyous greeting, the cat rubs against your legs, purrs showing its joy about your coming home.