“Courage is what it takes to stand up and speak; courage is also what it takes to sit down and listen.”
~ Winston Churchill

More on listening:
“To survive and even thrive in a changing world, nature offers another great lesson: the survivors are those who at the least adapt to change, or even better learn to benefit from change and grow intellectually and personally. That means careful listening and constant learning.”
~ Frances Arnold
“To see and listen to the wicked is already the beginning of wickedness.”
~ Confusius
“I like to listen. I have learned a great deal from listening carefully. Most people never listen.”
~ Ernest Hemingway
“Listen to many, speak to a few.”
~ William Shakespeare
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Listen /ˈlis(ə)n/
verb
give one’s attention to a sound. “evidently he was not listening”
noun
an act of listening to something.