"The holocaust was an obscene period in our nation's history.… No, not our nation's, but in World War II. I mean, we all lived in this century. I didn't live in this century, but in this century's history."
"I have made good judgments in the past. I have made good judgments in the future"
"You take the UNCF [United Negro College Fund] model that what a waste it is to lose one's mind or not to have a mind is being very wasteful. How true that is."
"Mars is essentially in the same orbit [as Earth]....Mars is somewhat the same distance from the Sun, which is very important. We have seen pictures where there are canals, we believe, and water. If there is water, that means there is oxygen. If oxygen, that means we can breathe."
So to answer your question, no the spelling gaffe wasn't the only thing.