12 Basic Principles of Animation in Motion Design

http://www.howdesign.com/web-design-resources-technology/12-basic-principles-animation-motion-design/?et_mid=733069&rid=248939721

An influential work on the grammar of motion is the 12 Basic Principles of Animation, first introduced in the book The Illusion of Life: Disney Animation. The Illusion of Life was written by Disney animators Ollie Johnston and Frank Thomas, two of the master animators referred to by Walt Disney as the “Nine Old Men.”