填空题 Translate the following into Chinese．I have never had much patience with the writers who claim from the reader an effect to understand their meaning. You have only to go to the great philosophers to see that it is possible to express with lucidity the most subtle reflections. You may find it difficult to understand the thought of Hume, and if you have no philosophical training its implications will doubtless escape you: but no one with any education at all can fail to understand exactly what the meaning of each sentence is. Few people have written English with more grace than Berkeley. There are two sorts of obscurity that you find in writers. One is due to negligence and the other to willfulness. People often write obscurely because they have never taken the trouble to learn to write clearly. This sort of obscurity you find too often in modern philosophers, in men of science, and even in literary critics. Here it is indeed strange. You would have thought that men who passed their lives in the study of the great masters of literature would be sufficiently sensitive to the beauty of language to write if not beautifully at least with perspicuity. Yet you will find in their works sentence after sentence that you must read twice to discover the sense. Often you can only guess at it, for the writers have evidently not said what they intended.