Oh, the Thinks You Can Think! is a children's book written and illustrated by Theodor Geisel under the pen name Dr. Seuss and published by Random House on August 21, 1975. The book is about the many amazing 'thinks' one can think and the endless possibilities and dreams that imagination can create.
"Oh, the Thinks You Can Think!" is also the name of a song in the musical play Seussical, which is based partly on this book.