Arrange these moments in the lives and works of Comte and Marx, earliest first.

1. Comte becomes secretary to Saint-Simon
2. The first volume of the Cours de philosophie positive appears
3. The word sociologie is published
4. The Communist Manifesto appears
5. Comte dies
6. The first volume of Capital appears

Laid out in order, the two careers interleave rather than succeed one another. Comte had finished his system before Marx had published anything of consequence, and Marx’s major economic work appeared a decade after Comte was dead, but neither engaged seriously with the other, and the discipline inherited both without their ever having argued.