The 12 principles of animation were first introduced by Disney animators Ollie Johnston and Frank Thomas in their book The Illusion of Life: Disney Animation, which was first released in 1981. In this book, Johnston and Thomas examine the work of leading Disney animators from the 1930s and onwards, and boil their approach down to 12 basic principles of animation.
12 Principles of Animation Compilation
Visit the Official Website of Frank Thomas and Ollie Johnston
Frank Thomas and Ollie Johnston were both born in California in the same year; 1912; Frank in Santa Monica, Ollie in Palo Alto. Although they had quite different personalities, they found that they worked together very well.