The mind and the heart make a good pair. The heart is an extremist: wild, a single emotion can fill its entire space. The mind finds balance and harmony, even between opposites.
The mind is cold and distant. To the mind, reality is a curiosity. But the heart lives in a real world, where things matter.
When the heart listens to the vision of the mind, it also learns to endure opposing voices, even the voices of other hearts. When the mind listens to the depths of the heart, then its own vision can reach the real world.