What point of view does buddhism have on heart and mind. I mean in terms of differences, dominance, reality, etc.
The meaning of "heart" and "mind", their differences, and their tendency to dominate a personality can be understood in several ways, according to buddhist dhamma.
One possible interpretation within buddhist doctrine is the concept of the five spiritual faculties (indriyas) which aids on the path to enlightenment. Here, heart or mind can be considered corresponding to the factors listed below. They are:
- Faith (saddha), to overcome doubt in buddhist teachings.
- Persistence (viriya), to overcome tiredness/laziness and to achieve right effort.
- Mindfulness (sati), to overcome thoughtlessness.
- Concentration (samadhi), to overcome distraction and deepen your focus.
- Wisdom (panna), to overcome lack of understanding of the four noble truths.
According to the Sona sutta in Anguttara Nikaya, these factors needs to be balanced in order to work in favor of attaining further cultivation.
https://www.accesstoinsight.org/tipitaka/an/an06/an06.055.than.html
Another interpretation of the aspects of heart and mind that comes to mind is the idea of general personality traits with regards to meditation. Each type is described with a particular temperament, and is therefore recommended a specific meditation practice (kammatthana). From this perspective, someone may be inclined to being faithful (heart), or to a more intellectual proclivity (mind), among others:
Six main character types are recognized — the greedy, the hating, the deluded, the faithful, the intelligent and the speculative — this oversimplified typology being taken only as a pragmatic guideline which in practice admits various shades and combinations.
The ten kind of foulness and mindfulness of the body, clearly intended to attenuate sensual desire, are suitable for those of greedy temperament.
Eight subjects — the four divine abidings and four color kasinas — are appropriate for the hating temperament.
Mindfulness of breathing is suitable for those of the deluded and the speculative temperament.
The first six recollections are appropriate for the faithful temperament.
Four subjects — mindfulness of death, the recollection of peace, the defining of the four elements, and the perception of the repulsiveness in nutriment — are especially effective for those of intelligent temperament.
The remaining six kasinas and the immaterial states are suitable for all kinds of temperaments. But the kasinas should be limited in size for one of speculative temperament and large in size for one of deluded temperament.
https://www.accesstoinsight.org/lib/authors/gunaratana/wheel351.html