Possible Clues:

• Not shut up
• Shut up in the form of an ode, but not shut up
• Turned key and unlocked
• There's something disclosed about the writer in the ode
• It's disclosed that the work need be hidden
• Not so close to this, it was
• The writer has not again shut up in the ode
• Not close to shut it up in the form of a poem
• Began with nothing written for speech
• Began to write in the dictionary