May 28, 1868. The cornerstone was laid on July 25, 1869. It opened for educational purposes on September 5, 1870.
=== Founding principles ===
St. John's Vincentian values stem from the ideals and works of St Vincent de Paul, who is the patron saint of Christian charity. Following the Vincentian tradition, the university seeks to provide an education that encourages greater involvement in social justice, charity, and service. The Vincentian Center for Church and Society, located on the university's Queens campus serves as "a clearinghouse for and developer of Vincentian information, poverty research, social justice resources, and as an academic/cultural programming center".
The St. John's University Seal bears one phrase in Latin and one in Greek. The Latin phrases "Sigillum Universitatis Sti Joannis Neo Eboraci" translates in English to "Seal of St. John's University, New York". The Greek phrase translates to "A lamp, burning, and shining", a reference to the way Jesus describes St. John the Baptist in John …
