Analysis of information sources in references of the Wikipedia article "Transcendental idealism" in English language version.
[Kant] distinguishes transcendental idealism from transcendental realism: 'To this [transcendental] idealism is opposed transcendental realism, which regards space and time as something given in themselves (independent of our sensibility). The transcendental realist therefore represents outer appearances [...] as things in themselves [...], which would exist independently of us and our sensibility and thus would also be outside us according to pure concepts of the understanding.'