Transcendental idealism

epistemology, proposed by Kant, in which space and time are merely formal features of how we perceive objects, not things in themselves that exist independently of us

Transcendental idealism is a part of philosophy. It was founded by German philosopher Immanuel Kant in 18th century. He wrote about it in his most famous work Critique of Pure Reason (1781). Transcendental idealism has several meanings. It may be the root cause of all phenomena. It is also about observable objects that are limited during perception by consciousness.