When I'm asked who my audience is, I say someone with an open mind, which is not a vacant one and sometimes a liberal mind is not the same thing as an open one.

An open mind and heart usually lead you to those who have the same.

The hardest thing in the world to open is the mind - and it is most easily opened when you're not trying.

A vacant mind is open to all suggestions, as a hollow mountain returns all sounds

Sometimes incompetence is useful. It helps you keep an open mind.

Every human being on the face of the earth has a steel plate in his head, but if you lie down now and then and get still as you can, it will slide open like elevator doors, letting in all the secret thoughts that have been standing around so patiently, pushing the button for a ride to the top. The real troubles in life happen when those hidden doors stay closed for too long.