I found the source. He and Ranzato gave a talk at ICML 2013

https://cilvr.nyu.edu/lib/exe/fetch.php?media=deeplearning:2...

Slide #9

Let's be inspired by nature, but not too much

It's nice imitate Nature,

But we also need to understand

For airplanes, we developed aerodynamics and compressible fluid dynamics.

Question : what is the equivalent of aerodynamics for understanding intelligence