铁幕演说中的一些经典句子包括：
1. "The United States stands at this time at the pinnacle of world power. It is a solemn moment for the American democracy. For with this primacy in power is also joined an awe-inspiring accountability to the future."
2. "Opportunity is here now, clear and shining, for both our countries. To reject it or ignore it or fritter it away will bring upon us all the long reproaches of the aftertime."
3. "It is necessary that constancy of mind, persistency of purpose, and the grand simplicity of decision shall rule."
4. "From the Baltic to the Adriatic, a iron curtain has been drawn down. Behind that line lie all the capitals of the ancient states of Central and Eastern Europe — Warsaw, Berlin, Prague, Vienna, Budapest, Belgrade, Bucharest and Sofia. All these famous cities and the populations round them are in the Soviet sphere of influence and under its influence more or less openly."
5. "Almost everywhere, police governments have taken charge. In all except Czechoslovakia, there is no true democracy."
6. "We must make sure that this organization is effective. It is not a mere form of words, but a reality, a force that operates through concrete actions, not through empty phrases."
7. "I have a clear and practical suggestion to make. We should immediately set about building an international armed force for the United Nations. This is a task that must be started without delay, but it can be done step by step."
这些句子反映了丘吉尔对当时国际形势的深刻洞察和对未来世界的忧虑，同时也展现了他对英美两国合作的期望和对苏联扩张的警惕。