One line would quote a chosen line (e.g. <Username> Quote #12: You're not as real as you think you are) while the other would just go random (e.g. <Username> Random Quote #233: This house is protected by killer dust bunnies.)
try it like this, see if it works
/qq say Quote Number $$1 $read -l $+ $$1 quotes.txt
/quote say Random Quote: quotes.txt
usage
/qq 12
posts line 12 of quotes.txt with "Quote Number (the number)" in front
/quote
posts a random line from quotes.txt with "Random Quote:" in the front.