"Day 100 - From the marks I have been making on the walls, and my scribbled diary entries – which, in the dark, may amount to an ineligible scrawl – today is the hundredth day of my new life. Over the past month my edible friends have become more and more aggressive, and have swelled in number and size. Whether or not this is a result of my plundering their ecosystem, I am unsure, however, at this rate of growth they will soon be too large to crawl through the gaps in the walls. For all I know I could only be seeing the tip of the iceberg. If all else fails, and I am never recovered, I hope at least my study of, and, indeed, involvement with, these fascinating creatures will one day be regarded as an important point in natural history. The greatest names in modern science got their more through fluke than talent, and it appears that this rule has extended itself to my discovery of this delicious new species. I pray that the second rule deems my breakthrough too insignificant: for all the great discoveries tend to consume their inventor."
January 1, 1970
https://en.wikiquote.org/wiki/Penumbra_(video_game_series)