This quote by George Orwell is a reminder of the value of clarity in composing. It suggests that excellent writing ought to be transparent and enable the reader to easily comprehend the message. It indicates that the writer must be concise and direct, preventing unneeded words or expressions that might obscure the meaning. The metaphor of a windowpane suggests that the author needs to be able to supply a clear view of the subject, allowing the reader to quickly understand the point being made. Great writing must be like a windowpane, permitting the reader to quickly see the message without any obstruction. It should be clear and succinct, offering the reader with a direct view of the subject. By utilizing this metaphor, Orwell is highlighting the significance of clearness in composing.