Liar, expresses his emotions and reaction is very slow in comparison to the usual behavior of people. Starts with pauses, is more restless and ends abruptly.
Between expression of emotions and words takes some time. For example, you say that you had done something brilliantly and then, after realizing what he has stated, smiling. The person speaking the truth emotions will go along with the words.
The expression on the face is not consistent with what the person is saying. For example, when you say "I love You", the human face becomes as if he had eaten half a lemon.
When the liar expresses emotions, it involved not the whole face, but only some part of it. For example, he smiles only with his mouth, does not involve the muscles of the nose, eyes and cheeks. By the way, in such cases, the eyes are truly the mirror of the soul, because control their expression is very difficult, and for some virtually impossible.
The man who is lying will avoid meeting your eyes.
Speaking the truth externally, trying to occupy as little space, pressing his hands to himself and to one another. Also he may be trying to turn you from your body or head.
A liar is justified in a conversation, instead of having to go to the "attack."
Telling lies people will very often touch or scratching the ears or nose. There are rare cases when the liar begins to touch an open hand to the chest, to the heart.
Often a liar will not give you a clear answer to the question, instead it will say "floating" answer that can be understood in different ways.
A person who lies will say a lot of things. It will be uncomfortable if the conversation will start pause.
It often happens that the lying person to avoid the topic is to use humor and sarcasm.
Remember these signs and you can easily determine if someone will lie. And know that they work best on those people you know for a long time.