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 both our countries. Bring upon us all long reproaches mind, consistency of purpose, and the grand simplicity of decisions shall rule English-speaking peoples war."
3. "We must make all these things certain. It is a work of reality, not of mere words. It is a matter of action, not of empty talk. It is a palace of peace, not a theatre of jarring and clashing."
4. "It is necessary that constancy of mind, persistency of purpose, and the grand simplicity of decision shall guide us."
这些句子体现了丘吉尔对当时国际形势的深刻洞察和对未来的警示，同时也展现了他对英美两国合作，共同维护世界和平与民主的期望。