Ikkyu, a famous Zen teacher was the child of a Zen mother. Upon her passing, she left the following owrds for her son, "..The teaching of Buddha was mainly for the purpose of enlightening others. If you are dependent on any of its methods, you are naught but an ignorant insect. There are 80,000 books on Buddhism and if you should read all of them and still not see your own nature, you will not understand even this letter. This is my will and testament."