Preconceived notions are the locks on the door to wisdom.

The discovery of truth is prevented more effectively not by the false appearance things present and which mislead into error not directly by weakness of the reasoning powers but by preconceived opinion by prejudice.

For somebody famous it's weird anyway to meet someone because they have a preconceived notion of who you are.

The actual tragedies of life bear no relation to one's preconceived ideas. In the event one is always bewildered by their simplicity their grandeur of design and by that element of the bizarre which seems inherent in them.

I just think that people take me a little more seriously as a brunette. I don't know if that's just because of a societal preconceived notion that all blondes are stupid but it's a different kind of attitude.

It's amazing what ordinary people can do if they set out without preconceived notions.