Answer:
Correct answer is He was known for his poems about human existence and life.
Step-by-step explanation:
First option is not correct as although himself was a philosopher, he wasn't known as someone who studied Greek philosophy.
He was never an architect so second option is also not correct.
Third option is correct as his poems were so popular that were later even introduced to European audience.
Last option is not correct as we don't known who are the authors of this piece.