Leonardus Lessius (1554-1623) was a Dutch-born Belgian priest known for his work in theology, philosophy, and economics. He was born on October 11, 1554, in Brecht, Belgium and later became a citizen of both the Netherlands and Belgium. Lessius received his education at the Pontifical Gregorian University, where he studied theology.
Occupationally, Leonardus Lessius was a priest, and he held this position until his death on January 25, 1623, in Leuven, Belgium. Throughout his life, Lessius made notable contributions to various fields, particularly theology, philosophy, and economics, earning him recognition as an important historical figure.