Valedictorian Aman Sinha, a mechanical and aerospace engineering major from Ivyland, Pa., reminds graduating students that there is much to learn after leaving Princeton, such as "how to chase not just success but happiness."

Photo: Princeton University, Office of Communications, Denise Applewhite (2013)

Senior Amelia Bensch-Schaus, a classics major from Swarthmore, Pa., delivers the Latin Salutatory, the University's oldest student honor.

Photo: Princeton University, Office of Communications, David Kelly Crow (2013)

Todd Kent (left), associate director of Princeton's Program in Teacher Preparation; Christopher Campisano (right), director of Teacher Prep; and Tilghman gather with the outstanding New Jersey secondary school teachers who were honored at Commencement: (from left) Robert O'Boyle, Hopewell Valley Central High School; Medha Jayant Kirtane, Ridgewood High School; John McAllen, Point Pleasant High School; and Deane Stepansky, Nutley High School.

Photo: Princeton University, Office of Communications, Denise Applewhite (2013)

Provost and President-elect Christopher L. Eisgruber (left) recognizes four outstanding New Jersey secondary school teachers at Commencement: (from left) Deane Stepansky, Robert O'Boyle, John McAllen and Medha Jayant Kirtane.

Photo: Princeton University, Office of Communications, Denise Applewhite (2013)

Douglas Clark, chief marshal for University convocations, hoods Tilghman as she receives her honorary doctoral degree from Princeton.

Photo: Princeton University, Office of Communications, Denise Applewhite (2013)

Sajen, a service dog, joins the graduation celebration decked out with Princeton gear.

Photo: Princeton University, Office of Communications, Denise Applewhite (2013)

Tilghman joins faculty members who were recognized with President's Awards for Distinguished Teaching: (from left) Deborah Nord, Andrew Houck, Yelena Baraz and David Spergel.

Photo: Princeton University, Office of Communications, Denise Applewhite (2013)

Honorary doctoral degree recipients gather with Tilghman in the Faculty Room: (front) Toni Morrison and (from left): Frank Gehry, Lorraine Daston, Sakena Yacoobi and Francis Collins. Tilghman also received an honorary degree from the University.

Photo: Princeton University, Office of Communications, Denise Applewhite (2013)

Commencement is the last of the many festivities enjoyed by graduating students as they leave Princeton as alumni.

Photo: Princeton University, Office of Communications, David Kelly Crow (2013)

Students stand up and cheer as their academic departments are recognized.

Photo: Princeton University, Office of Communications, David Kelly Crow (2013)

Graduates of the Class of 2013 gather before the start of the ceremony.

Photo: Princeton University, Office of Communications, David Kelly Crow (2013)

A crowd of approximately 10,000 students, families and friends attended Princeton University's Commencement on Tuesday, June 4. Families watched the student processional through the front of campus at the start of the ceremony.

Photo: Princeton University, Office of Communications, David Kelly Crow (2013)

Moses Icyishaka, a graduate of the Class of 2013, receives his diploma at Mathey College following the Commencement ceremony.

Photo: Princeton University, Office of Communications, Neil Mills (2013)

Booyeon Julia Han receives a congratulatory kiss from her parents Sokbom Han (left) and Jungmi Han (right).

Photo: Princeton University, Office of Communications, David Kelly Crow (2013)

Erin Jacobs (left) received a Ph.D. in sociology and Jessica Maxwell received a Ph.D. in art and archaeology during Princeton's 266th Commencement.

Photo: Princeton University, Office of Communications, David Kelly Crow (2013)