Terminal TTS

#!/bin/bash
#requires espeak

clear
echo -e "Terminal TTS\n"
echo -e "Enter 0 to quit...\n"
while [ "$sayIt" != 0 ]
do
    read -p "Type in something to say: " sayIt
    clear
    echo -e "Terminal TTS\n"
    echo -e "Enter 0 to quit...\n"
    if [ "$sayIt" = 0 ]; then
        espeak "Ending Program. Goodbye."
        clear
    else
        espeak -s120 -ven-us+m3 "$sayIt"
    fi
done