"Show me a worm that understands"...CS Lewis Quote

[Eleazar]

I recently heard this quote by C. S. Lewis (purportedly) but can't exactly remember how it goes or find it using the power of Google.

It goes something like this:

"Show me a worm that understands man and I will show you a man that understands God."

Basically saying: as different as a worm is from man, man is from God.

Anyone know how it goes for certain? I can't remember if it's "If you can show me a worm..." or ehmm..or it could be from somebody else too...

[Eleazar]

Four years later, I found it!

"What gnats are compared with humans, so is the whole creation compared with God." - John Chrysostom