Appearances can be deceiving.
You can learn a lot from this statement. It might teach one not to judge. Or it might teach to think before speaking. Or, it might teach one to not be too eager to step on things. For me, I'll look back at the moment (last night) when I was walking home in the dark and deliberately stepped on what I thought was a particularly protuberant blob of tar (which i like doing, for some reason) but it was far too squishy and oddly soft to be so. We kept walking and Sean pointed out that it was probably a dead mouse. Horrified I realized he was probably right, and I wanted to go back to check but he wouldn't let me. I'll never know, but i'll always wonder. It is a good lesson to learn.