Words of Sai
You should realize that it is not possible for anyone to know in what form, in what situation, at what time and in what circumstances the Lord appears to man to teach him how to get rid of his bad thoughts, bad qualities and bad actions. Therefore, you must make every effort to keep out bad thoughts and bad qualities and try to sanctify your life by good thoughts and good actions. This is true sadhana (spiritual discipline).
– Divine Discourse, 1st June 1996