preconceived opinion

But a preconceived opinion is the chief cause why opposing instances are overlooked.

To Darwin the doctrine of creation is but “a curious illustration of the blindness of preconceived opinion.”

The day will come when this will be given as a curious illustration of the blindness of preconceived opinion.

This repugnance is of a metaphysical order; it springs from a preconceived opinion on the government of the world.

It is always possible to discover some anatomical detail which will give support to a preconceived opinion.