If you are running core bitcoin you can easily read Satoshi's first message directly out of the blockchain. The famous "The Times 03/Jan/2009..."

bitcoin-cli getblock 000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f 2 | jq -r '.tx[].hex' | xxd -r -p | strings