The software behind it is a frontend to my homegrown version of the Unix "fortune" program.
You can get random quotes by hitting the question mark. You can also jump to a specific quote by entereing the number into the textbox and hitting "Enter". You can also go through the quotes sequentially with the Arrow shaped links.
If you like my taste in quotes, you kind find more at kisrael.com's Fortune Program- there are many repeats, but many different quotes as well.