The types of knowledge representing the three phases are: universal knowledge in the Middle Ages, liberal knowledge in the modern time, and advanced scholarship in the contemporary era.

• 即从中世纪时期宗教性真理统一观念之下的普遍知识论，到近代脱胎于普遍知识的与专业知识相对立的自由知识，再到现代独立的高深学问知识论逻辑。