3.
There's no excuse for having a mental or creative block in sound. You can just go out and collect things in the real world - they make the sound, not you. It's very restricting to always use a library for sound effects. It's much more interesting and freeing to go out and record new sounds because you never know what you're going to get.
Gary Rydstrom
4.
Sound comes to us over time. You don’t get a snapshot of sound. Therefore, what you notice with sound, the essential building block, is change.
Gary Rydstrom