Philosophical Investigations (Philosophische Untersuchungen), 1953 work by Ludwig Wittgenstein
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These range from medieval woodcuts through philosophical texts to contemporary works of fiction, including Augustine's Confessions, Wittgenstein's Philosophical Investigations, and Thomas Bernhard's novels and stories.
While many philosophers have suggested variants of such ideas in readings of Wittgenstein's "late" work, associated with the Philosophical Investigations, a notable aspect of the New Wittgenstein interpretation is a view that Wittgenstein's early work, exemplified by the Tractatus Logico-Philosophicus, and the Investigations, are actually more deeply connected, and in less opposition, to each other than usually understood.
The Italian philosopher Emanuele Severino has founded his extended philosophical investigations on the words of Parmenides.