If the book Mahatma Letters says that a married man cannot become an adept then the author of it must be thinking of a special kind of adeptship belonging to his own particular school of thought and training which is, as a matter of fact, a school for monks only. But this school is not the only one which is able to find truth. There are others and they are intended not for monks but for people who have to live in the world and earn their livings and live the family life. The real celibacy is in the heart and mind and has nothing to do with external social customs like ascetic monasticism.
-- Notebooks Category 1: Overview of the Quest > Chapter 3: Independent Path > # 229