Facts, Knowledge & Beliefs.
Someone asked : “should we give up all our beliefs?”
I understand the sentiment. It's probably coming from the idea that beliefs, or dogma are a source of conflict. We also see a lot of trouble being caused by harmful or incorrect beliefs.
In dialogue we say that the identification with a belief is a barrier to honest inquiry - it prevents open communication.
For example, if I am a Marxist I am under the impression that I have absorbed the understanding of Karl Marx 🤪 - and when I hear a Capitalist speaking I find it difficult to listen to what they say - I feel a form of resistance, they seem to be talking rubbish.
But the word “belief” just refers to a mental state - it refers to our level of confidence in the truth value of a proposition. And our relationship with propositions or concepts is on a spectrum. As an illustration lets imagine we are at a bus-stop :
If we can see that a bus is arriving at the bus-stop, we are directly perceiving a fact - the degree of confidence is so high we don't even use the term belief in this case.
If we take the proposition : "buses are a form of public transport" our level of confidence is such that we would use the term "knowledge" - we say "I know that buses are a form of transport"
However if we say : "the bus will arrive at 6:15pm" then our level of confidence or belief will vary.
The idea that we should not have any beliefs is a form of confusion - it is also itself a belief.
What is important is the authority of the belief - in other words our relationship with knowledge.
David Hume said that we should proportion our beliefs to the evidence. We could also say that we should not confuse our opinions with the facts.