The sound of silence. The Letter G, in Scandinavian languages, is silent (or alters the vowel with a diphthong) when it falls after a vowel at the end of a word, as in "veg", which means way, or path or road.
This logo has such a clever message. I would even say that it makes organ donation look appealing. The center of the man is cut out and moved so it looks like he is giving his organs as a gift, which I assume was the intent of the organization.