“I will not let anyone walk through my mind with their dirty feet.”
“You might be poor, your shoes might be broken, but your mind is a palace.”
“When the heart speaks, the mind finds it indecent to object.”
“The snake which cannot cast its skin has to die. As well the minds which are prevented from changing their opinions; they cease to be mind.”
“A man’s mind is stretched by a new idea or sensation, and never shrinks back to its former dimensions.”
Oliver Wendell Holmes Sr.