base belief

i've had a debate with my friend, where it came something akin to a... religious belief. he believed that "A is good", but i was asking if "A is good" is a suitable base belief. it led me to question my own base belief, and realized that i... both have it and don't. it's something a bit conflicting, like i believe that my base belief is influx/ever changing. i'm on my way seeing if i can really form anything more concrete, apart from that jumble.