Any opinions on transcendental idealism?

G. E. Moore made some remarks on it. I don't believe in transcendental idealism. Kant didn't prove anything. His philosophy is full of mistakes. 'Ding-an-sich' and his categories of mind, his time&space teaching - now way. It proves nothing. Even his separation analytic from synthetic judgements (propositions) is not fully right. Wittgenstein, Russel and Carnap held the meaning that mathematical propositions are analytic, and not synthetic. W. V. O. Quine also criticized Kant on such separation. He, and many other researchers, like A. Pap, held a view on analytic/synthetic propositions like there's a class of non-definition judgements (propositions) between them.

Well, I flooded much. I'm sorry. About the force of idealism of Kant for destroying realism - I really don't know the precise mechanism of this proof. So, I refer you to the article of Moore. Good luck!

Moore's proof of existence of the World