Here they work the opposite way--they say: "Know the fundamental principles governing the operation of the universe and then all the pieces fit together inside this final Truth." I understand now why so many of the Oak Ridge boys turned to religion after they had been exposed to the electron microscope for a while--they realized they had gone as far as their "scientific" training would ever take them. Time and space are running out. I know all this must sound confused and incredible, Dick; I'm still confused myself. But I want you to think about what I've written, then take the action you think best. I know it won't be easy for you. If you think this is some maniac's idea of a joke, you'll have proof very soon that it isn't, because _one of the people at your Center is due to leave for here any time now_. You're wondering why I used this weird and wonderful means of communication. The problem was to find a writing material which would stand up in Earth's atmosphere--oddly enough, it's not the oxygen which causes the trouble, but the so-called "inert" nitrogen. The container will probably not disintegrate for a couple of days at sea level atmospheric pressure, but this material I'm writing on would not last more than a few seconds. That's one reason they picked you--most people just don't have a spare decompression chamber up in the attic! The other reason was that with your photographic memory, you'll know this is my handwriting, beyond the shadow of a doubt, I hope. I'm sure you've sat in that pressure suit long enough. But remember, if you want to take another look at this, you'll have to put it back in the container before you go "down." Wishing you all you would wish for yourself, Jim. Forster examined the signature. That was the way Bentley made the capital J--it looked almost like a T, with just a faint hook on the bottom of the down-stroke. Then the way it joined the-- "Hey, Doc--are you going to tie up the tank all day? I've got work to do." * * * * * Forster recognized the voice on the intercom as Tom Summerford's. Summerford was one of the crop of recent graduates to join the Center--brash, noisy, irresponsible like the rest of them. He knew Forster hated being called "Doc," so he never lost an opportunity to use the word. True, he was gifted and well-trained, but he was a ringleader in playing the practical jokes on Forster which might have been funny in college, but which only wasted a research team's time in these critical days. Practical joke. Anger flooded over him. Yes, this was all a macabre game cooked up by Summerford, with the help of some of his pals. Probably they were all out there now, snickering among themselves, waiting to see his face when he came out of the decompression chamber ... waiting to gloat.... "Hey Doc! You still with us?" "I'll be out very shortly," Forster said grimly. "Just wait right there."