Theophrastus extended Peripatetic research in botany, natural philosophy, logic, ethics, and the comparative study of philosophical doctrines.
Intellectual setting
As Aristotle's successor, Theophrastus maintained the Lyceum's research program while adapting it across a remarkably broad range of subjects.
Key ideas
Botanical inquiry
His plant studies organize observations about growth, causes, environments, and practical cultivation.
Problems in first principles
Metaphysical puzzles test how explanatory causes and principles can be consistently stated.
Legacy
His botanical writing remained authoritative for centuries, and his successor role makes the early institutional continuity of the Peripatos unusually visible.