2345
Thinkers such as Rousseau and Herder argued that language had originated in the instinctive expression of emotions , and that it was originally closer to music and poetry than to the logical expression of rational thought .
 Rousseau, Herder
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Rousseau, Herder