Radiohead - I Might Be Wrong lyrics

I might be wrong I might be wrong I could have sworn I saw a light coming on I used to think I used to think There is no future left at all I used to think Open up, begin again Let's go down the waterfall Think about the good times And never look back Never look back What would I do? What would I do? If I did not have you? Open up, let me in Let's go down the waterfall Have ourselves a good time It's nothing at all Nothing at all Nothing at all