Conscience and Moral Decision-Making

What is conscience? Is it the voice of God, the voice of reason, or merely the internalised voice of social conditioning? The concept of conscience is central to moral decision-making and has been understood in radically different ways by theologians, philosophers, and psychologists. This lesson examines the major accounts of conscience — from Aquinas\'s rational account to Newman\'s theological account and Freud\'s psychological account — and considers how conscience functions in practical moral dilemmas.

Aquinas on Conscience: Synderesis and Conscientia

St Thomas Aquinas (1225–1274) developed the most influential philosophical account of conscience in the Christian tradition. Aquinas distinguished between two aspects of conscience:

Synderesis: The innate, infallible disposition to do good and avoid evil. Synderesis is not a separate faculty but a habitus — a stable disposition of the practical intellect. It grasps the first principles of morality (e.g., "good is to be done and evil avoided") immediately and without deliberation. Synderesis is universal and cannot err — every rational human being possesses the basic orientation toward good.
Conscientia: The act of applying moral principles (grasped by synderesis) to particular situations. Conscientia is the process of moral reasoning — deliberating about what to do in a specific case. Unlike synderesis, conscientia can err: a person may reach a wrong moral conclusion because of ignorance, faulty reasoning, or a failure to consider all relevant factors.

Aquinas\'s account has several important implications:

Conscience is rational: For Aquinas, conscience is not a feeling, an emotion, or a mysterious inner voice — it is an act of practical reason. Moral decision-making is a rational process of applying universal principles to particular cases.
Conscience must be followed: Aquinas argued that a person must always follow their conscience, even if it is mistaken. To act against one\'s conscience is always wrong, because it means doing what one genuinely believes to be evil. However, a person has a duty to form their conscience correctly — to educate themselves, seek counsel, and apply reason diligently.
Vincible and invincible ignorance: Aquinas distinguished between vincible ignorance (ignorance that could and should have been overcome through reasonable effort — the person is morally culpable for their error) and invincible ignorance (ignorance that could not reasonably have been overcome — the person is not morally culpable).

Joseph Butler on Conscience

Joseph Butler (1692–1752), the Anglican bishop and moral philosopher, argued in his Fifteen Sermons Preached at the Rolls Chapel (1726) that conscience is the supreme moral authority in human nature — it has "authority" and "superintendency" over all other principles of action (self-love, benevolence, particular passions).

Conscience as supreme: Butler argued that conscience is not merely one motive among others but occupies the highest position in the hierarchy of human motivations. If a person follows conscience, they do what is right; if they follow self-interest or passion against the dictates of conscience, they act wrongly. "Had it strength, as it has right; had it power, as it has manifest authority, it would absolutely govern the world."
Conscience is God-given: Butler held that conscience is implanted by God as a guide to moral action. It is not merely a social construct or the product of upbringing but a divinely ordained faculty that enables human beings to discern right from wrong.
Intuitive moral knowledge: Unlike Aquinas, who emphasised the rational, deliberative nature of conscience, Butler saw conscience as more intuitive — it delivers immediate moral judgments without the need for elaborate reasoning. Conscience speaks with a "clear voice" that we recognise immediately, even if we do not always obey it.
Criticisms: Butler\'s account has been criticised for offering no method for resolving conflicts between the dictates of different people\'s consciences. If conscience is self-authenticating, how do we adjudicate when my conscience tells me one thing and yours tells you another? Butler\'s appeal to the authority of conscience may also be circular — conscience is authoritative because it is authoritative.

John Henry Newman on Conscience

John Henry Newman (1801–1890), the Victorian theologian and cardinal (canonised as a saint in 2019), developed a profoundly theological account of conscience. For Newman, conscience is not merely a faculty of reason or a product of social conditioning but the "voice of God" speaking within the human soul.

Conscience as the voice of God: Newman argued that the experience of conscience — the sense of moral obligation, the feeling of guilt when we do wrong, the satisfaction when we do right — points beyond itself to a personal God who commands and judges. "Conscience is the aboriginal Vicar of Christ" (A Letter Addressed to His Grace the Duke of Norfolk, 1875). Conscience has the character of a command — it presents moral demands as obligations, not mere suggestions. The best explanation for this imperative character is that conscience is the voice of a personal, authoritative, commanding God.
Conscience and the Pope: Newman\'s famous statement — "If I am obliged to bring religion into after-dinner toasts... I shall drink — to the Pope, if you please — still, to Conscience first, and to the Pope afterwards" — affirms the primacy of individual conscience even within the context of Catholic obedience to papal authority. Conscience is the ultimate court of appeal because it is the voice of God Himself.
Conscience as evidence for God: Newman saw conscience as evidence for the existence of God. The moral feelings associated with conscience — guilt, shame, responsibility, fear of judgment — are appropriate responses not to an abstract law but to a personal judge. Conscience, for Newman, is a form of religious experience that testifies to the reality of God.

Conscience and Moral Decision-Making