Step 1: Understanding the Concept:
The question asks to identify the author of the famous philosophical statement, "Man is born free but everywhere he is in chains." This quote is a cornerstone of political philosophy.
Step 2: Detailed Explanation:
This iconic line is the opening sentence of Jean-Jacques Rousseau's influential 1762 work, The Social Contract.
Rousseau's argument is that humans in their natural state are free.
However, the development of modern society, with its complex social structures, laws, and governments, has imposed "chains" or constraints on this natural liberty.
He explores how a legitimate political authority can be formed based on a social contract that preserves freedom and justice.
The other options listed are prominent figures in education and psychology, but not known for this particular quote.
Step 3: Final Answer:
The quote is famously attributed to Jean Jacques Rousseau.