In the province of the mind, what one believes to be true, either is...

Who said "In the province of the mind, what one believes to be true, either is... "?

"In the province of the mind, what one believes to be true, either is... " is one of a famous quotes by John Lilly. Complete quote is as follows;
"In the province of the mind, what one believes to be true, either is true or becomes true."

What is "In the province of the mind, what one believes to be true, either is... "?

"In the province of the mind, what one believes to be true, either is true or becomes true." This is a quote by John Lilly which is about Wisdom & Spiritual. He is known to have been associated with numerous other thought provoking quotes on these topics like;

• Age is an issue of mind over matter. If you don't mind, it doesn't matter.
• Everybody needs beauty as well as bread, places to play in and pray in, where nature may heal and give strength to body and soul.

What does "In the province of the mind, what one believes to be true, either is... " mean?

This quote is primarily about Spiritual although it also includes other themes like Wisdom & Spiritual. It is attributed to John Lilly. Complete quote is as follows;
"In the province of the mind, what one believes to be true, either is true or becomes true."