The son of a custom-house official, Le Play was educated at the École Polytechnique and the École des Mines. He took an interest in sociological questions even as a young man at the École des Mines, befriending a follower of the socialist thinker Saint-Simon. In the late 1820s, Le Play undertook an immense walking tour of Germany investigating its mines. In 1830, a laboratory accident seriously damaged Le Play's left hand and left him disabled for life. While he was recovering in Paris, he was a witness to the events of the July Revolution, and thereafter resolved himself to studying the issues that plagued French society.