I agree; Kant was a bad choice, in hindsight.  I don't think any of the great philosophers have been particularly easy to understand.  I guess I was just trying to remark that adherents of philosophical tradition emphasize the attempt to be completely thorough and as straight forward as possible, while the themes of many eastern religions are anything but that.  I see how using riddles and nonsensical concepts can be effective at reaching certain realizations, but the masters who told their disciples to contemplate such riddles seem more like pranksters than philosophers to me.

I disagree.  What Kant was trying to show was that some of the most predominant structures of reality originate within the mind.