"Roses are red, violets are blue, I am schizophrenic, and so am I."
"I used to call Audrey Hepburn a walking X-ray.""Everyone in Hollywood is gay, except Gabby Hayes — and that's because he is a transvestite."
"Underneath this flabby exterior is an enormous lack of character."
"When asked what he does for exercise, Levant replied, "I stumble, then fall into a coma."
"What the world needs is more geniuses with humility, there are so few of us left."
"I'm a concert pianist, that's a pretentious way of saying I'm unemployed at the moment."
"Leonard Bernstein is revealing musical secrets that have been common knowledge for centuries."You'll find these and more on the Wikipedia page for Levant. It's found here.
And if you want more Oscar there's always his own writings.