CHICAGO — For a guy who is only 35 and lives in a walkup apartment, Eboo Patel has already racked up some impressive accomplishments.

A Rhodes scholar with a doctorate in the sociology of religion from Oxford University, he has four honorary degrees. His autobiography is required freshman reading on 11 college campuses. He runs a nonprofit organization — the Interfaith Youth Core — with 31 employees and a budget of $4 million. And he was tapped by the White House as a key architect of an initiative announced in April by President Barack Obama.

Patel got there by identifying a sticky problem in American civic life and proposing a concrete solution. The problem? Increased religious diversity is causing increasing religious conflict. And too often, religious extremists are driving events.

He figured that if Muslim radicals and Christian supremacists were recruiting young people, then those who believe in religious tolerance should also enlist the youth.

Interfaith activism could be a cause on college campuses, he argued, as much "a norm" as the environmental or women's rights movements, as ambitious as Teach for America. The crucial ingredient was to gather students of different religions together not just to talk, he said, but to work together to feed the hungry, tutor children or build housing.

"Interfaith cooperation should be more than five people in a book club," Patel said. "You need a critical mass of interfaith leaders who know how to build relationships across religious divides, and see it as a lifelong endeavor."

Until Patel came along, the interfaith movement in America was largely the province of elders and clergy members hosting dialogues and, yes, book clubs — and drafting documents that had little impact at the grass roots. Meanwhile at the grass roots, inter-religious friction was sparking up regularly over public school holidays, zoning permits for houses of worship and religious garb in the workplace. At many universities, there is open hostility over the Israeli occupation of Palestinian territories and the failure to find a peaceful solution.

Patel, who is Muslim, is not saying that his plan will solve all those conflicts, just that the focus should be on what he calls "the American project." Immigrants across the generations brought their faiths, their biases and their beefs and "built a new pattern of relationships" over here, he said, pointing out that English Protestants and Irish Catholics eventually overcame their enmity on these shores.

"When I go to a campus where the Muslim Student Association and the Hillel are not talking to each other," he said, (referring to the national Jewish student group) in a lecture this spring at Columbia University, "my question to them is, 'Who did you feed in Ramallah by not talking to Hillel? Who did you keep safe in the south of Israel by not talking to the MSA?'"

There are many interfaith groups, but none like Patel's, where youthful idealism and spiritual searching have been channeled by pro bono consultants from McKinsey & Co. into strategic plans, templates and spreadsheets. The offices take up one whole floor in a handsomely renovated industrial building. On one end is a small prayer room. On the other end, the manager of foundation development tracks the progress of grant applications worth millions of dollars on a bulletin board.

By the end of the school year in June 2010, the Youth Core had trained leaders on 97 campuses, who engaged an average of 100 students, for a total of 10,000 participants. The leaders are undergraduates, religious and nonreligious, who attended summer training sessions led by Youth Core staff members, and then returned to their campuses to organize interfaith events and community service projects using the upbeat slogan, "Better Together."

Patel started the Youth Core in 2002 with a Jewish friend, a $35,000 grant from the Ford Foundation, and one full-time paid staff member, April Mendez, an evangelical Christian who still works with the organization as vice president for leadership.

Patel's parents were Indian immigrants from the Ismaili Shiite sect, which is known for its philanthropic work. But Patel spent his days at the University of Illinois at Urbana-Champaign and afterward running away from his own roots, searching for spiritual identity and purpose. He read Dorothy Day and lived in Catholic Worker houses, volunteered in a homeless shelter run by evangelical Christians in Atlanta, practiced Buddhist meditation and made a pilgrimage to the Dalai Lama in India. But when he visited his grandmother in Bombay and saw her taking in battered women, he realized that his own tradition offered the ethic of service and humanitarianism he had been looking for all along.

Now, during the work day, Patel flies from speaking engagements to White House meetings to college campuses. At night, coming home to his apartment, Patel's year-old son, Khalil, is waiting at the glass door. Patel tries to live the philosophy that exposure to other religions enhances one's own. He and his wife, Shehnaz Mansuri, a civil rights lawyer and a Sunni Muslim, have hired a South American nanny who sometimes recites the Lord's Prayer to their two sons. They send their 4-year-old, Zayd, to a Catholic pre-school.

"When Zayd talks about saints," Patel said, "I can tell him about imams."