I believe that nothing should ever be black and white
"I believe that nothing should ever be black and white....but don't hold me to it"
Isn't that what you mean? If nothing is black and/or white, then you have no beliefs.
"I believe my wife should be faithful, but I shouldn't deny her freedom to sexually express herself with others."
"I believe Posh Spice was the hottest Spice Girl, but Ginger was the hottest."
"I believe Epstein killed himself, but other people killed him."
"I believe there is no excuse for child rape, but I believe Cub Scout leaders are complicated individuals with understandable needs."
"Thunder only happens when It's raining, except there are other times."
"I believe I've heard enough, so please tell me more."