There, he spent his whole life working for the material and spiritual betterment of his parishioners; he was particularly well known for his preaching.

Cochin is especially remembered for his philanthropy and for founding a hospital that continues to operate to this day.

The idea of creating an institution to serve the healthcare needs of his parishioners was conceived in 1780 and resulted in the completion of a building over which the Sisters of Charity took charge.

The inscription on the building read: Pauper clamavit et Dominus exaudivit eum (The poor man cried, and the Lord heard him).

In 1801, the General Council of the Paris hospitals gave it its name of its charitable founder, which it retained.