Final answer:
W.E.B. Du Bois made the statements urging the inclusion of African Americans in society and politics, and the importance of higher education in Liberal Arts.
Step-by-step explanation:
The statements in question were made by W.E.B. Du Bois, an influential African American leader who urged the inclusion of African Americans in society, politics, and higher education, especially in the Liberal Arts. Du Bois was a strong advocate for political and social equality and emphasized the importance of education for African Americans to become leaders and effect change.
His work included the establishment of the Niagara Movement, as well as his role as a publications director for the National Association for the Advancement of Colored People (NAACP), where he contributed significantly to civil rights efforts and stood against segregation and discrimination.