"A teacher, a really good sensei, is never a giver of  'truth'; he is a guide, a pointer to the truth that the student must discover for himself. A good teacher, therefore, studies each student individually and encourages the student to explore himself, both internally and externally, until, ultimately, the student is integrated with his being. A good teacher is a catalyst. Besides possessing deep understanding, he must also have a responsive mind with great flexibility and sensitivity."

--Bruce Lee, "Liberate Yourself from Classical Karate," in Bruce Lee: 1940 - 1973 (Los Angeles, California:  Rainbow Publications, Inc., 1974)