Everyone can act. Everyone can improvise. Anyone who wishes to can play in the theater and learn to become 'stage-worthy.' We learn through experience and experiencing, and no one teaches anyone anything. This is as true for the infant moving from kicking and crawling to walking as it is for the scientist with his equations. If the environment permits it, anyone can learn whatever he chooses to learn; and if the individual permits it, the environment will teach him everything it has to teach. 'Talent' or 'lack of talent' have little to do with it.

Improvisation for the Theater (1963), page 3