《我有一个梦想》是马丁·路德·金于1963年8月28日在华盛顿林肯纪念堂发表的著名演讲。以下是演讲的部分原文内容：

"Five score years ago, a great American, in whose symbolic shadow we stand today, signed the Emancipation Proclamation. This momentous decree came as a great beacon light of hope to millions of Negro slaves who had been seared in the flames of withering injustice. It came as a joyous daybreak to end the long night of their captivity."

"But one hundred years later, the Negro still is not free. One hundred years later, the life of the Negro is still stolen in the shadows of racial隔离和歧视. One hundred years later, the Negro lives on a lonely island of poverty in the vast ocean of wealth. One hundred years later, the Negro is still shrinking in the corners of American society, and realizes that he is still a stranger in his own land."

"Today, we gather here to draw attention to this shameful situation. We are not here to celebrate. We are here to bring attention to the骇人听闻的事实 that the Negro still suffers from injustice. We are here to demand an end to this injustice."

"I have a dream that one day this nation will rise up and live up to the true meaning of its creed: 'We hold these truths to be self-evident, that all men are created equal.'"

"I have a dream that one day on the red hills of Georgia, the son of a slave will be able to sit down with the son of a slave owner and share a brotherly friendship. I have a dream that one day even the state of Mississippi, where justice is dead and oppression reigns, will become a beacon of freedom and justice. I have a dream that one day my four children will live in a nation where they will not be judged by the color of their skin but by the content of their character."

这段演讲表达了马丁·路德·金对于种族平等和自由的渴望，成为了美国民权运动中的一个标志性事件。