Conversation so far:
What is Santiniketan?
Shantiniketan is a neighbourhood of Bolpur city in Bolpur subdivision of Birbhum district in West Bengal, India, approximately 165 km north of Kolkata.
When did Rabindranath Tagore move to Shantiniketan?
In 1901 Tagore moved to Santiniketan to found an ashram with a marble-floored prayer hall—The Mandir—an experimental school, groves of trees, gardens, a library.
Was Rabindranath Tagore successful in founding the ashram?
Did Rabindranath Tagore have any issues while at Shantiniketan?
Rabindranath Tagore was awarded a knighthood by King George V in the 1915 Birthday Honours, but he renounced it.
Why did Rabindranath Tagore renounce his knighthood?
Tagore renounced it after the 1919 Jallianwala Bagh massacre.

Question: What did he say in his lecture?
Self-contained rewrite: What did Rabindranath Tagore say in his lecture?