Factbox - 'This is stunning': Quotes from Capitol Hill on Day six of Trump impeachment trial

Attorney Ken Starr speaks as U.S. President Donald Trump's legal team resumes its presentation of opening arguments in Trump's Senate impeachment trial in this frame grab from video shot in the U.S. Senate Chamber at the U.S. Capitol in Washington, U.S., January 27, 2020. U.S. Senate TV/Handout via Reuters

WASHINGTON (Reuters) - U.S. President Donald Trump's Senate impeachment trial was overshadowed on Monday by an unpublished manuscript from former national security adviser John Bolton that said Trump wanted to freeze U.S. aid to Ukraine to pressure the country for politically beneficial investigations.

The following are selected quotes: