Tasos Fratzolas is a sound designer and sound effects creator originally from Greece. Here he gives a brilliant talk at TEDx on the beauty and meaning of sound. He covers a little bit on foley, reverb, and the meaning sound can convey. He also shows a brilliant example of how sound completely changes the meaning of a scene (with a video of a toddler's face and different sound effects).
I hope you find this as inspiring as I did.
You can find Tasos' sound library at Soundsnap.com.