"Ooh!" said Susan. "I'd thought he was a man. Is he-quite safe? I shall feel rather nervous about meeting a lion."
"That you will, dearie, and no mistake,"' said Mrs. Beaver; "if there's anyone who can appear before Aslan without their knees knocking, they're either braver than most or just silly."
"Then he isn't safe?" said Lucy.
"Safe?" said Mr. Beaver; "don't you hear what Mrs. Beaver tells you? Who said anything about safe? 'Course he isn't safe. But he's good. He's the King, I tell you."

--"The Lion, the Witch, and the Wardrobe" by CS Lewis

Enough said. I couldn't say it any better.