UCLA Luskin celebrated the graduating class of 2015 Friday, welcoming 68 students in urban planning, 56 students in public policy and 101 students in social welfare to the ranks of its alumni.

“This is how change is made,” Dean Franklin D. Gilliam, Jr., said in his opening remarks. “It starts with a small group of people who believe.”

His words resonated with the audience of faculty, family and friends, who have watched UCLA Luskin’s graduate students develop as change agents over the course of their education.

Three students addressed the crowd during the ceremony. Ana Tapia, who graduated with a master of urban and regional planning and who came to UCLA as an undocumented student after her family emigrated to the U.S. in 1994, spoke of how her degree encouraged her to follow her dreams. Urban planners, she said, “are people who turn dreams into reality. We not only dream and plan, but make things happen.” She urged her fellow students to “go dream, go plan and go on to do great things.”

Public Policy graduate CC Song cast her cohort as the “architects of the future,” devising and deploying policies to help build equity and create a better world. She spoke of being ready to take on life after graduate school, asking her fellow students to “find the courage to seek what makes you curious, fulfilled and challenged.”

Jennifer Chou, a graduate of UCLA Luskin’s Master of Social Welfare program, spoke about the “acceptance of not knowing” when confronted with an uncertain future. Her heartfelt speech included a rendition of a verse from the Louis Armstrong classic “What a Wonderful World.”

The invited speaker, newly installed Uber public relations executive Rachel Whetstone, brought in the perspective of a group not often mentioned on Commencement day — those who “don’t dream well.” Whetstone put herself in that category, and told the story of a career that proceeded not by some overarching grand scheme but instead progressed as a series of steps from college to internships to opportunities at various organizations.

She said her experience had taught her that hard work helps make up for the absence of a dream. “Pour yourself into your job,” she said, “even if it seems like a chore.” As she acknowledged and embraced the persona of the stereotypical overworked Silicon Valley executive, she relayed a story of a visit with a psychiatrist friend, who said something that stuck with her: “Has it ever occurred to you, Rachel, that hard work is what makes you happy?” Hard work can open up new horizons, she said, and she urged the graduating students to apply themselves to their work, “because if you don’t try, you will never, ever know.”

The ceremony was a mix of pomp and celebration, with a sense of impending change on the horizon. Dean Gilliam summed up the mood best through his quotation of, as he described it, a “classic of American Cinema,” the movie Friday.

“For most people, Friday’s just the day before the weekend,” he said. “But after this Friday, the neighborhood will never be the same.”