De Staël completed the initial part of her first most substantial contribution to political and constitutional theory, "Of present circumstances that can end the Revolution, and of the principles that must found the republic of France". On 6 December 1797 she had a first meeting with Napoleon Bonaparte in Talleyrand's office and again on 3 January 1798 during a ball. She made it clear to him she did not agree with his planned French invasion of Switzerland. He ignored her opinions and would not read her letters.