A mineral habit is the one of all mineral characteristics that should, and often is, considered first (I didn't start the list with it because it's only obvious for someone experienced). To identify minerals, it is very important to know which minerals grow crystals-not all do.
Tear down this wall! Tear down this wall! is a line from a speech made by US President Ronald Reagan in West Berlin on June 12, 1987, calling for the leader of the Soviet Union, Mikhail Gorbachev, to open up the barrier which had divided West and East Berlin since 1961.
Shield of Bulletproof Glass. Speaking with two panes of bulletproof glass shielding him from East Berlin, Mr. Reagan stressed a theme of freedom and peaceful reunification of Berlin. That was a point made by President Kennedy in his ''Ich bin ein Berliner'' speech two years after the wall was built. ''Standing before the Brandenburg Gate, every man is a German, separated from his fellow men,'' Mr. Reagan said.