Final answer:
The paraphrase of Polonius's advice 'To thine own self be true' in the fourth soliloquy of 'Hamlet' can be simply worded as 'Be true to yourself,' recommending honesty and faithfulness to one's own beliefs and character.
Step-by-step explanation:
To paraphrase the first sentence in the fourth soliloquy, we may reword Polonius's advice from Shakespeare's 'Hamlet' which is originally phrased as "To thine own self be true" to a more simplified version such as "Be true to yourself". This recommendation emphasizes the importance of remaining honest and faithful to one's own character and beliefs, rather than succumbing to external influences or deceptions. The essence of the content remains the same; the content loaded message is about authenticity and integrity. Certainly, I'd be happy to help with that. However, I need the specific soliloquy you're referring to, as different works and characters have their own fourth soliloquies. Could you please provide more details, such as the title of the play or the character who delivers the soliloquy?