It would help our human relations if we could keep in mind the distinction between beliefs and ideas. Beliefs are not amenable to rational examination; ideas are.

Beliefs are extra-rational assertions; ideas are products of our rational capacity. It is because beliefs are extra-rational that they are so personal to people; beliefs inevitably merge with feelings, which are also non-rational.

No human being can have an idea that is free from subjective influences, but ideas are not purely subjective in the way beliefs are. People can and do become emotionally attached to their ideas, but there is an intrinsic space between ideas and feelings that does not exist between beliefs and feelings.