“An empty envelope that is sealed contains a secret. ”

“My fate is like those envelopes – sealed and tossed aside.”

“But underneath it there was not a sound, there was nothing that even whimpered or budged in our tunnel and it seemed Harry and me were tightly sealed inside something, like two secret letters lying next to each other in an envelope.”

“Spray a book with insect spray, drop it in a bag, add some mothballs and seal it. Put it in another bag and seal it. Another. The packages piled up on the floor, each a book sealed in four plastic envelopes.”

“Power contains secrets...Secrets contain knowledge...Knowledge contains power.”

“Mitchell sanders was sitting under a banyan tree and using a thumbnail to pry off all the body lice, working slowly, carefully depositing them in a USO envelope. When he was done he sealed the envelope, wrote 'Free' in the right hand corner, and sent it to his draft board in ohio.”