In the Qur’an the qalb, the heart, is the true centre of the person, the place of understanding, feeling, faith and disease. It can soften or harden, be sound or sick. To the modern reader this can sound poetic, but it is closer to current science than it first appears.

Thinking is not only in the head

Affective neuroscience has dismantled the old split between cool reason and warm emotion. We now know that emotion is woven through all reasoning, and that bodily states, including signals from the heart, shape how we think and decide. The tradition’s insistence that the heart knows is, in this sense, quietly vindicated.

Tending the heart

If the heart can harden, it can also be softened, through remembrance, through humility, through turning toward others. The practices of dhikr and reflection are, among other things, a discipline of attention that keeps the heart responsive rather than numb.

A heart that can be tended

If the heart can harden, the more hopeful truth is that it can also be softened, and the tradition treats this not as a matter of luck but of practice. Remembrance, humility, generosity, and turning toward those who suffer all keep the heart responsive. Neglect, arrogance and cruelty do the opposite, dulling it over time until it no longer feels what it once did. The state of the heart, in other words, is something we participate in, day by day.

Feeling as a form of knowing

Modern science has come to respect what the tradition long assumed, that to feel deeply is not the enemy of clear thinking but part of it. Studies of people whose emotional processing is damaged show that they do not become coldly rational; they become unable to decide well at all. Emotion, it turns out, is woven through judgement, and the body’s signals, including those of the heart, inform our sense of what matters. The Qur’anic image of a heart that understands is, in this sense, quietly vindicated.

The danger of a hardened heart

There is a clinical echo, too, in what the tradition calls hardness of heart. Chronic stress, unprocessed pain and constant self-protection can leave a person numb, cut off from their own feeling and from others. This is not strength, though it can masquerade as it. The work of softening, through reflection, connection and remembrance, is not sentimental indulgence. It is the restoration of the very instrument through which we know ourselves, each other, and God.

The heart as the seat of intention

In the tradition, the qalb is not only where we feel but where we intend. Actions are weighed by the niyya, the intention, that lives in the heart, which means the inner life is treated as the true measure of a person, beneath all outward performance. Modern psychology agrees in its own way: motivation and values, largely felt rather than coldly reasoned, shape behaviour far more than we like to admit. To tend the heart, then, is to tend the wellspring from which a whole life flows.

Attention is the heart’s diet

What the heart consumes, it slowly becomes. The tradition warns that heedlessness and constant distraction harden the heart, while remembrance softens it, and contemporary attention science quietly confirms the principle. What we repeatedly look at, scroll through, and dwell upon reshapes our inner default. In an age engineered for distraction, choosing what fills your attention is not a small matter. It is, in a real sense, choosing what kind of heart you will have a year from now.

Keeping the heart soft

A soft heart is not a weak one. It is a heart still capable of being moved, by beauty, by the pain of others, by the sacred, and this responsiveness is the ground of both compassion and faith. Keeping it soft is active work: turning toward suffering rather than numbing to it, practising gratitude and humility, and returning regularly to remembrance. The opposite, a heart gone hard through self-protection, may feel safer for a while, but it is a costly safety, purchased by cutting oneself off from the very capacity to feel alive.

A reflection by Mentscape. If you are in crisis, please contact a crisis line or your GP.