Subjective belief in anything literally means you lose the capability for

'potential' objective truth.

The definition of being a free thinker should be built on the premise of non-belief. It doesn’t matter whether it is the right or wrong—if you believe in something, you are automatically precluded from believing in its possible opposite. This emphasises the importance of faith and leverages knowledge. We can all have personal beliefs, of course, but be wary: the collection of subjective beliefs can be made manifest into objective reality, for better or worse.

Mind is reality, and reality is the mind. Have faith in truth, spread the love.