I. The origins of the religious notion
Religion is as old as humanity. From the moment human beings raised their gaze to the sky and wondered about the origin of thunder, rain, or death, the need arose to explain the inexplicable. The first human groups, organized in tribes, found in religion a language to name what exceeded their control. Myth was the first philosophy, ritual the first politics, and worship the first medicine of the spirit.
In Mesopotamia, the Sumerians built temples for their gods, convinced that agricultural prosperity depended on maintaining harmony with the divine. In Egypt, religion legitimized the power of the pharaoh as mediator between men and gods, guaranteeing the cohesion of an empire that survived for millennia. In Greece, the Olympic myths not only narrated divine feats but also offered models of virtue and warnings about human hybris. In Mesoamerica, the Maya and Mexica built ritual calendars that linked cosmic time with daily life, convinced that the continuity of the world depended on reciprocity with the sacred.
Religion, in all these cultures, was more than belief: it was social structure, communal bond, and medicine against anguish. The word religare suggests precisely that: union, bond, bridge between the human and the divine. Religion was not born as dogma but as a response to fragility. It was the first form of justice, because it gave meaning to suffering; the first form of solidarity, because it united men around the sacred; and the primordial source of morality and ethics, teaching that human life must be governed by higher principles, not mere convenience, but because there exists a transcendent mandate, a greater order.
Over time, the religious notion evolved. Animism gave way to polytheism, and this to monotheism. Mystery cults offered experiences of initiation and hope in life after death. Universal religions—Christianity, Islam, Buddhism—transcended ethnic and linguistic borders, becoming communities of faith that offered comfort in times of war, persecution, or crisis. At every stage, religion was medicine of the spirit, a resource to face the harshness of existence.
II. Resignifying Marx
Karl Marx, in the 19th century, wrote the famous phrase: “Religion is the opium of the people.” In popular culture, this sentence has been interpreted as an insult, as if Marx had wanted to disqualify religion as deception or illusion. However, the historical context reveals something else. In 19th‑century Europe, opium was a legitimate medicine, prescribed to relieve intense pain, insomnia, and anxiety. It was, in fact, a medicine for physical suffering.
Marx’s metaphor, then, was not an insult but a recognition. Religion fulfilled a palliative function: it calmed existential pain in a world marked by exploitation and inequality. Marx criticized that religion did not resolve the material causes of suffering, but he acknowledged that it offered comfort. His critique was political, not medical: religion calmed the pain but did not cure the social disease; he pointed to the social root of pain and recognized the palliative function of religion.
Today we can resignify that phrase. If opium was medicine for the body, religion is medicine for the soul. It does not replace political action or social transformation, but it accompanies human beings in their fragility. Religion, far from being deception, is a legitimate resource to face existential anguish. And like all medicine, its access must be protected.
III. Historical examples of religion as medicine of the spirit
- Christianity in times of persecution: In the first centuries of our era, Christians were persecuted by the Roman Empire. They were accused of atheism for denying the official gods and of treason for not worshiping the emperor. Yet Christian faith offered hope: the promise of resurrection, the dignity of martyrs, the solidarity of clandestine communities. Religion was medicine against fear. Persecution did not destroy faith; it strengthened it.
- Buddhism in times of war: In Asia, Buddhism arose as a response to human suffering. Siddhartha Gautama, the Buddha, taught that life is marked by pain but that there is a path to liberation: compassion, meditation, and wisdom. In times of war and crisis, Buddhism offered spiritual refuge. In Japan, during feudal conflicts, monasteries were spaces of peace. In Tibet, religion sustained identity against invasions and exile. Buddhism taught how to transform suffering into a path of liberation.
- Islam in contexts of crisis: Islam was born in the 7th century in Arabia, in a context of tribalism and violence. Its message was revolutionary: the unity of God, the equality of believers, the obligation of social justice. In times of crisis, Islam offered cohesion. During Arab expansion, religion united diverse peoples under one faith. In times of colonization, religion was an identity refuge against foreign domination. Islam restored dignity to humiliated communities, offering meaning and hope.
- Religion in China: In China, religious tradition is plural: Confucianism, Taoism, and Buddhism coexisted for centuries. Each offered a different medicine for the spirit. Confucianism taught social harmony, respect for ancestors, and virtue in public life. Taoism proposed union with the Dao, the natural way, offering serenity in uncertainty. Buddhism, arriving from India, offered compassion and meditation. In times of dynastic crisis, famines, or invasions, these religions were spiritual refuge. Religion in China was not dogma but plurality of medicines for the soul.
IV. Religion, philosophy, and science: a common origin
The idea that there is something “beyond”—an invisible order, a first cause, a transcendence—is the seed of philosophy and science. Wonder before the unknown led early thinkers to ask questions that went beyond myth but were born from it.
In Greece, the Presocratics sought to explain the cosmos with rational principles, but starting from the religious intuition that the world had order. Plato spoke of the divine as supreme idea, Aristotle of an “unmoved mover” giving meaning to motion. Babylonian astronomers observed the sky to understand the will of the gods; Hippocratic physicians sought to heal the body inspired by the notion of natural balance.
In the Middle Ages, figures like Copernicus, Kepler, and Newton were deeply motivated by faith. For them, studying the universe was deciphering God’s language. Newton said nature was a book written by the Creator in mathematical characters.
In the 20th century, Einstein synthesized this relationship with his famous phrase: “Science without religion is lame, religion without science is blind.” For him, science needed the inspiration and meaning that religion offered, while religion needed the critique and clarity that science provided. It is worth noting that Einstein’s religious notion was not linked to traditional creeds but to a cosmic intuition of order and mystery.
If religion was seed of philosophy and science, then the right to belief protects not only spiritual freedom but also intellectual freedom. To deny religion would be to amputate a part of the history of human thought.
V. The human right to belief
The Universal Declaration of Human Rights (1948) recognizes in Article 18 the freedom of thought, conscience, and religion. This right implies the freedom to believe or not believe, to change religion, to practice faith in community or in private.
But every right entails an obligation. The right to belief demands respect, even from non‑believers. Freedom of opinion and expression cannot annul religious freedom, because:
- Religion is more than opinion: it is identity, community, and meaning.
- Freedom of expression is relative: it cannot violate fundamental rights of others.
- Respect is reciprocal: just as believers must respect non‑believers, atheists must respect believers.
To deny this respect would be like forbidding an analgesic to one who suffers. Religion, as medicine of the spirit, is a right that must be protected above mere opinion. The atheist has the right to express criticism but the obligation to respect religious freedom. Coexistence rests on that balance: to believe or not believe, but always to respect.
Conclusion
Religion was born as response to mystery, developed as social bond, and resignified as spiritual medicine. It was seed of ethics and morality, of philosophy and science, because wonder before transcendence drove rational search. Marx’s phrase, far from insult, recognized its palliative function before human pain. Einstein, centuries later, reminded us that science and religion are interdependent: one without the other would be mutilated.
Today, defending the right to belief is defending human dignity and the cultural legacy of Humanity that sustains coexistence. And because every right implies an obligation, citizens—and consequently governments—must respect religious freedom, even above freedom of expression and other relative liberties. Coexistence rests on that balance: religion as medicine of the spirit, philosophy as question, science as answer, and law as guarantee of respect