Friday, 16 January 2026

Summary of Ludwig Wittgenstein’s Lecture on Ethics

Wittgenstein begins his lecture by addressing the difficulties he faces in communicating his thoughts, noting that English is not his native tongue and may lack the precision required for such a difficult subject. He clarifies that he chose a topic he is personally keen to communicate rather than providing a scientific lecture on logic, which would require far more time than a single hour.

He explains his rejection of "popular-scientific" lectures, which he believes offer a superficial understanding and merely gratify a modern curiosity for the latest discoveries. Instead, he intends to discuss Ethics, defining it through a wide range of synonyms—such as the "enquiry into what is valuable" or the "meaning of life"—to help the audience see the collective "typical features" of the subject. He warns that philosophical lectures are often difficult to follow because the listener may struggle to see both the path and the ultimate goal of the argument simultaneously.

The author distinguishes between two uses of language: the trivial or relative sense and the ethical or absolute sense. In the relative sense, words like "good" or "important" simply mean meeting a predetermined standard or serving a specific purpose, such as a "good chair" or the "right road" to a destination. However, an absolute judgement of value carries a distinct weight; for instance, while one can choose not to play tennis well, one "ought to want to behave better" in an ethical context, regardless of personal inclination.

Wittgenstein contends that no statement of fact can ever imply an absolute judgement of value. He illustrates this by imagining an omniscient person writing a book containing every possible fact and state of mind in the world; such a book would contain no ethical propositions, as all facts and propositions exist on the same level. Even a detailed description of a murder remains a mere statement of facts, as the "ethical" element cannot be captured by scientific or factual description.

He argues that a scientific book on ethics is impossible because language is a vessel only capable of conveying natural meaning and sense. Ethics is supernatural, and trying to fit absolute value into factual language is like trying to pour a gallon of water into a teacup. He asserts that an "absolutely right road"—one that everyone would logically feel compelled to follow—is a chimera, as no state of affairs possesses the coercive power of an absolute judge.

To clarify his meaning, Wittgenstein shares a personal "experience par excellence": wondering at the existence of the world. He also describes the feeling of being "absolutely safe," where nothing can injure him regardless of what happens. He points out that expressing these feelings in words is linguistic nonsense, because "wonder" typically implies imagining an alternative (like wondering at a large dog because small dogs exist), yet one cannot imagine the world not existing.

The lecture notes that ethical and religious expressions often function as similes or allegories, such as describing God as a powerful human whose grace we seek. However, Wittgenstein argues that these are "nonsensical" because if one drops the simile to describe the facts behind it, no facts are found. This leads to the paradox that a factual experience can appear to have "supernatural" or absolute value.

Using the example of a "miracle," like a person growing a lion's head, he explains that a scientific view of a fact precludes it from being seen as a miracle. Once an event is investigated and categorised, its miraculous nature disappears. He concludes that the attempt to use language to express the absolute is not a failure of logical analysis, but rather that nonsensicality is the very essence of such expressions.

Ultimately, Wittgenstein describes the human attempt to speak of Ethics or Religion as a tendency to "run against the boundaries of language". This "running against the walls of our cage" is hopeless and adds nothing to scientific knowledge. Nevertheless, he concludes by stating that he deeply respects this human tendency and would never ridicule it.

Watch video lesson of the speech Lecture on Ethics