“The brain speculates but the heart knows.”

“You don't know, perhaps, but I will tell you; the brain is the palest of all the internal organs, and the heart the reddest. Whatever comes from the brain carries the hue of the place it came from, and whatever comes from the heart carries the heat and color of its birthplace.”

“In a conflict between the heart and the brain, follow your heart.”

“Sometimes, divine revelation simply means adjusting your brain to hear what your heart already knows."
Angels and Demons p. 484”

“What does the brain matter compared with the heart?”

“I have a big heart and a small brain. ”

“A brain with no heart and no reasoning… well, nothing is more meaningless.”

“To be sane in a mad time
is bad for the brain, worse
for the heart.”

“Follow your heart but take your brain with you.”

“Thou large-brained woman and large-hearted man.”