When did he decide to walk to the doorsteps of the people for distributing books? (Read the text and answer the question)

Polan Sarkar was born in Bagatipara under the district of Natore on the 1" August 1921.

In his boyhood his family had to face financial troubles. So, as a boy he borrowed books from every possible source and read them voraciously.

Throughout his life Polan Sarkar spread the light of knowledge by distributing books for free among people. For this contribution to enlighten the society, he is called Alor Ferrywala.

He received some inheritance form his grandfather. With this, he established a school in his village in 1965.

Polan Sarkar gave books to the common students in the condition of returning the books upon finishing.

After being diagnosed with diabetes in 1992, Polan Sarker decided to distribute books during his daily walks so that he could contribute more to succeed his mission.