“For most actors, success is achieved through study, struggle, preparation, infinite trial and error, training, discipline, experience and work!”
~Robert Cohen 

“Without wonder and insight, acting is just a trade. With it, it becomes creation.” 
~Bette Davis

“The actor has to develop his body. The actor has to work his voice.  But the most important thing the actor has to work on is his mind.” 
~Stella Adler