What was meant by the advice Be intolerant of ignorance but understanding of illiteracy in you Know Why the Caged Bird Sings?

This advice means to be firm in challenging and addressing ignorance, which is the lack of knowledge or information. However, it also suggests being compassionate and patient towards those who may not have had the opportunity to learn or access education, defining illiteracy. It emphasizes the importance of confronting ignorance while also acknowledging and supporting individuals who may not have had the same opportunities.