In the poem “Where The Mind Is Without Fear” by Rabindranath Tagore, what does the poet mean by “depth of truth”?

option 1. the word spoken by individual originate from a place of sincerity, honesty and genuine understanding
option 2. the word spoken by the individual do not have any relation with sincerity honesty and genuine understanding
option 3. the poet wants that individually should not speak words with clarity honesty and genuine understanding
option 4. according to the poet the word is spoken with sincerity honesty and genuine understanding are only three pillars of life