Here’s a quote from Yolo Akili’s book: Dear Universe; Letters of Affirmation and Empowerment – For All Of Us –
Principles of Human Communication:
#5 Understand that everyone interprets the world through their own ideas, past experience, psychological framework, social location and pain. You see the world based on where you have been. You see the world based on who you are, based on how you are perceived and how you perceive others. Those perceptions are not absolute. They are not the only truth, and they are not the only way of knowing things. Understand this.
The author is pointing out that in order to have effective communication with other humans we must put aside our own beliefs. By putting aside our own beliefs we will better understand where the other human is coming from. As a result you will have a clearer, more truthful communication.