Actions speak louder than words, the old adage goes. But words have shaped our world, marking the triumphs and disasters of our lives and setting the tone for our future. Take a tour through time in our selection of the moments that moulded the 20th century. Vladimir Ilich Lenin "True socialists now the communists" Mao Zedong Birth of People's Republic Mahatma Gandhi "Faith transcends reason" King Edward VIII Abdication Address Neville Chamberlain "Here is the paper" Robert Oppenheimer "I am become death" Winston Churchill "An iron curtain has descended" John F.Kennedy "Ask not what your country can do for you..." Neil Armstrong "One small step for man" Richard Nixon Resignation address Margaret Thatcher "The lady's not for turning" Mikhail Gorbachev Perestroika and Glasnost Helmut Kohl German reunification Nelson Mandela "One Nation speech" Martin Luther King "I have a dream"

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