Originally Posted By: Hydra
If a piece of writing is impenetrable to someone after many readings, and the reader understands the thesis when it is expressed by others in plain English, the fault is clearly in the writing. The author has failed to express himself clearly.

Since most philosophers have not written in English, plain or otherwise, that's not necessarily so. There is also the question of translation, cultural considerations, etc. The fault might not always be with the philosopher.