"Day 35 - Any know venom would have affected me by now, and so today is the first minor cause for celebration I have had since the incident. By lucky coincidence, this revelation also means I have discovered a virtually inexhaustible supply of nutrition. I intend to venture into the basement beneath this storeroom, in the name of science, to discover more about these creature’s natural habitat."
January 1, 1970
https://en.wikiquote.org/wiki/Penumbra_(video_game_series)