The world-outlook that grants reality only to sense-perceptible matter; for Steiner, one of twelve standpoints, true within its own sphere and blind beyond it.
Materialism is the standpoint that treats matter as the sole reality and the senses as the sole witnesses to it. In Human and Cosmic Thought (1914) Rudolf Steiner places it among twelve world-outlooks arranged like a zodiac of thought, each valid where it belongs. The materialist clings to what makes the crudest impression, builds the cosmos from atoms and force, and so reads existence as a calculable machine.
Materialism in Anthroposophy is the world-outlook that grants reality only to sense-perceptible matter and its laws. In Rudolf Steiner's Human and Cosmic Thought (GA 151), delivered in Berlin in 1914, it is one of twelve justifiable standpoints, each true within its own domain and one-sided beyond it. The materialist remains with what makes the crudest impression on the senses, taking matter, atoms, and measurable force as the whole of existence, and so renders the world as a mechanical apparatus whose colours and sounds reduce to vibration numbers. Steiner grants this view full validity for material life, for the material world and its laws, while holding that it falls silent the moment it speaks of the spirit. Its diametric opposite is Spiritualism. Historically the standpoint reaches its sharpest pitch in nineteenth-century natural science, and today it underwrites the reductive physicalism that treats mind as brain-mechanism.
In Steiner's Own Words
They remain, let us say, with what makes the crudest impression on them, with the material. Such a person is a materialist, and their worldview is materialism. It is not necessary to always find foolish what materialists have put forward in defense of or as proof of materialism, for an enormous amount of astute things have been written in this field. What has been written applies first and foremost to the material realm of life, to the world of matter and its laws.
What it Means Today
Steiner did not treat materialism as an error to be scolded but as a competence with a narrow charter. To see the charter clearly, look at the books that argued the case hardest. Ludwig Buchner's Force and Matter (Kraft und Stoff), published in 1855, became the bestseller of nineteenth-century German materialism precisely by insisting that force and matter are inseparable and uncreated, that nothing exists beyond them, and that mind is a function of the brain as bile is a function of the liver. A generation later Ernst Haeckel raised the same conviction into a system he called monism, fusing matter and spirit into one substance governed wholly by physical law and broadcasting it through his 1899 Die Weltratsel to a vast popular readership. Steiner knew both men's work at first hand and answered it across his life, yet in this 1914 lecture he conceded their point within its limit: about matter and its laws they may bring to light extremely useful and valuable things.
The Thalira reading is that materialism fails not by what it affirms but by what it forbids itself to ask. It is the sacral, sense-bound pole of the zodiac of thought, exact about the measurable and mute about the measurer. Its opposite number, Spiritualism, makes the mirror error from the far side. Whenever a contemporary neuroscientist declares that consciousness simply is neural firing and can be nothing more, Buchner's and Haeckel's standpoint is speaking again, useful in its sphere, overreaching the instant it claims to be the only sphere.
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