The conception of Finns being a reserved people dates back quite a long way and is no longer totally valid, at least not for the younger generation. Still it is fair to say that Finns have a special attitude to words and speaking: words are taken seriously and one should stick to what has been said. Because of this, a Finn usually carefully considers what he says and expects everyone else to do so too.
A Finn is better at listening than speaking and he considers it to be impolite to interrupt. A Finn is not upset by pauses in the conversation because silence is a form of communication for the Finns.