Conversation so far:
How would you describe Santiniketan?
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.
When did he move there?
In 1901.
Was he successful in founding the ashram?
In November 1913, Tagore learned he had won that year's Nobel Prize in Literature: the Swedish Academy appreciated the idealistic--and for Westerners.
Did he have any issues while there?
He was awarded a knighthood by King George V in the 1915 Birthday Honours, but renounced it after the 1919 Jallianwala Bagh massacre.
Why did he renounce it?
In the early 1930s he targeted ambient "abnormal caste consciousness" and untouchability.
He lectured against these.

Question: What did he say in his lecture?
Self-contained rewrite: What did Rabindranath Tagore say in his lecture about "abnormal caste consciousness" and untouchability?