Antimetabole

"Ask not what your country can do for you; ask what you can do for your country." - John F. Kennedy

"When the going gets tough, the tough get going." - Joseph P. Kennedy Sr. (and others)

"Fair is foul, and foul is fair." - The Witches in Shakespeare's Macbeth

"Eat to live, not live to eat." - Socrates

"All for one, and one for all." - The Three Musketeers (Alexandre Dumas)

"It's not the men in my life that count—it's the life in my men." - Mae West

"Mankind must put an end to war—or war will put an end to mankind." - John F. Kennedy

"We didn't land on Plymouth Rock. The rock landed on us." - Malcolm X

"Beauty is truth, truth beauty." - John Keats, "Ode on a Grecian Urn"

"The Sabbath was made for man, not man for the Sabbath." - Mark 2:27

"It is not even the beginning of the end but is perhaps, the end of the beginning." - Winston Churchill

"Human rights are women's rights and women's rights are human rights." - Hillary Rodham Clinton

"East and West do not mistrust each other because we are armed; we are armed because we mistrust each other." - Ronald Reagan

"All crime is vulgar, just as all vulgarity is crime." - Oscar Wilde, The Picture of Dorian Gray