“Try them, try them, and you may! Try them and you may, I say.”
Dr. Seuss book Green Eggs and Ham
Source: Green Eggs and Ham
Theodor Seuss Geisel was an American author, political cartoonist, poet, animator, book publisher, and artist, best known for authoring children's books under the pen name Dr. Seuss . His work includes several of the most popular children's books of all time, selling over 600 million copies and being translated into more than 20 languages by the time of his death.
Geisel adopted his "Dr. Seuss" pen name during his university studies at Dartmouth College and the University of Oxford. He left Oxford in 1927 to begin his career as an illustrator and cartoonist for Vanity Fair, Life, and various other publications. He also worked as an illustrator for advertising campaigns, most notably for Flit and Standard Oil, and as a political cartoonist for the New York newspaper PM. He published his first children's book And to Think That I Saw It on Mulberry Street in 1937. During World War II, he worked in an animation department of the United States Army where he produced several short films, including Design for Death, which later won the 1947 Academy Award for Best Documentary Feature.
After the war, Geisel focused on children's books, writing classics such as If I Ran the Zoo , Horton Hears a Who! , If I Ran the Circus , The Cat in the Hat , How the Grinch Stole Christmas! , and Green Eggs and Ham . He published over 60 books during his career, which have spawned numerous adaptations, including 11 television specials, four feature films, a Broadway musical, and four television series. He won the Lewis Carroll Shelf Award in 1958 for Horton Hatches the Egg and again in 1961 for And to Think That I Saw It on Mulberry Street. Geisel's birthday, March 2, has been adopted as the annual date for National Read Across America Day, an initiative on reading created by the National Education Association.

“Try them, try them, and you may! Try them and you may, I say.”
Dr. Seuss book Green Eggs and Ham
Source: Green Eggs and Ham
“My trouble was I had a mind but I couldn't make it up!”
Dr. Seuss book Hunches in Bunches
Source: Hunches in Bunches
“You oughta be thankful, a whole heaping lot,
For the places and people you're lucky you're not!”
Dr. Seuss book Did I Ever Tell You How Lucky You Are?
The last sentence of this statement is often misquoted as "You oughta be thankful, a whole heaping lot, / For the people and places you're lucky you're not!"
Source: Did I Ever Tell You How Lucky You Are? (1973)
Context: It’s a troublesome world. All the people who're in it
are troubled with troubles almost every minute.
You oughta be thankful, a whole heaping lot,
For the places and people you're lucky you're not!
“I speak for the trees, for the trees have no tongues.”
Variant: I speak for the trees!
Source: The Lorax
Source: Oh, The Places You'll Go!
“My shoe is off. My foot is cold. I have a bird I like to hold.”
Dr. Seuss book One Fish Two Fish Red Fish Blue Fish
Source: One Fish, Two Fish, Red Fish, Blue Fish
“For a host, above all, must be kind to his guests.”
Dr. Seuss book Thidwick the Big-Hearted Moose
Source: Thidwick the Big-Hearted Moose
“The sun did not shine.
It was too wet to play.
So we sat in the house
All that cold, cold, wet day.”
Dr. Seuss book The Cat in the Hat
Source: The Cat in the Hat (1957)
Dr. Seuss Oh, the Places You'll Go!
Oh, the Places You'll Go! (1990)
Source: Oh, The Places You'll Go!
“Cat, you ruined mom's dress!"
"Honey, it was ruined when she bought it.”
Dr. Seuss book The Cat in the Hat
Source: The Cat in the Hat
Dr. Seuss book The Cat in the Hat
Source: The Cat in the Hat
Source: There's a Wocket in My Pocket!
Dr. Seuss book The Sneetches and Other Stories
Source: The Sneetches and Other Stories
“And what would you do if you met a jibboo?”
Dr. Seuss book Oh, the Thinks You Can Think!
Source: Oh, the Thinks You Can Think!
Dr. Seuss book One Fish Two Fish Red Fish Blue Fish
Source: One Fish, Two Fish, Red Fish, Blue Fish
“I box in yellow Gox box socks.”
Dr. Seuss book One Fish Two Fish Red Fish Blue Fish
Source: One Fish, Two Fish, Red Fish, Blue Fish
Dr. Seuss book Did I Ever Tell You How Lucky You Are?
Did I Ever Tell You How Lucky You Are? (1973)
“Maybe Christmas, the Grinch thought, doesn't come from a store.”
Dr. Seuss book How the Grinch Stole Christmas!
"Maybe Christmas... perhaps... means a little bit more!"
Source: How the Grinch Stole Christmas! (1957)
Dr. Seuss book One Fish Two Fish Red Fish Blue Fish
One Fish Two Fish Red Fish Blue Fish (1960)
Variant: From there to here,
from here to there,
funny things are everywhere.
Source: One Fish, Two Fish, Red Fish, Blue Fish
“A Wasn’t just isn't. He just isn't present. But you… You ARE YOU! And, now isn't that pleasant!”
Dr. Seuss book Happy Birthday to You!
Source: Happy Birthday to You!
Source: How the Grinch stole Christmas! And other stories
“And he, he himself… the Grinch… carved the roast-beast!”
Dr. Seuss book How the Grinch Stole Christmas!
Source: How the Grinch Stole Christmas!
Variant: The more that you read,
The more things you will know.
The more that you learn,
The more places you’ll go.
Source: I Can Read With My Eyes Shut! (1978)