Leonard Nimoy said this quote
“ Spencer Tracy, when asked for advice on acting, said, “Know your lines and don’t bump into the furniture.” James Cagney said, “Walk in, plant your feet, look the other fellow in the eye and…tell the truth.” With all due respect to both of these giant talents, I would have to say there’s something more. The true creation of a being, a character other than one’s self, for me is comparable to a mystical or spiritual experience. To stand in another person’s shoes. To see as he sees, to hear as he hears. To know what he knows, and to do all this with a sense of control, a mastering of the dramatic moment, there must be more than a “natural talent” at work. ”