He published a number of written works, mostly related to Jewish theology but also dealing with broader subjects such as economics.

In combination Rée was given a thorough education in trade which was completed with several-years long stay in Hamburg with his uncle.

Hartvig Philip Rée quickly moved his father's business to Aarhus and opened a branch in Randers.

He got involved in shipping and started importing coal, iron, salt and hops and exporting grain, wool, fur and hides.

When his wife Thamar Rée died in 1850, he lost interest in his business and moved to Copenhagen where he spent the rest of his life in a modest apartment, continuing his studies.