In his address to graduating seminarians on Wednesday, United States Supreme Court Justice Samuel A. Alito, Jr. emphasized the importance of religious freedom and the dangers it faces today.

Religious freedom means that "no one is forced to act in violation of his own beliefs," Alito said, according to Catholic Philly. "Most of my life Americans were instilled in this," he added, and urged the audience "keep the flame burning."

Alito gave the keynote address at the concursus ceremony for the graduating class of St. Charles Borromeo Seminary in Philadelphia May 17, where he also received the degree of Doctor of Humane Letters, Honorus Causa, from Archbishop Charles Chaput of Philadelphia.

He was awarded the degree "in testimony to and recognition of his many outstanding contributions to society … especially in protecting the sanctity and dignity of human life, the full responsibilities of the human person and promoting true justice and lasting peace," Archbishop Chaput said.

Alito, 67, is a practicing Catholic from an Italian family in Trenton, New Jersey, and was nominated to the Supreme Court by President George W. Bush, where he has served since January 2006.

He wrote the majority opinion for the 2014 Burwell v. Hobby Lobby Stores, Inc. case, in which the court allowed for closely-held, for-profit corporations to be exempt from a regulation its owners religiously object to if there is a less restrictive means of furthering the law's interest, according to the provisions of the Religious Freedom Restoration Act.

He also wrote a dissent from the majority opinion in the 2015 Obergefell v. Hodges case, in which the Supreme Court held that the Constitution guarantees the right to same-sex marriage.

Prior to his address, in an interview with the St. Charles Borromeo blog Seminarian Casual, Alito again spoke about religious freedom as well as the effect his faith and family has had on his career.

Religious freedom is "one of the most fundamental rights" in the United States, Alito said, and the founding fathers "saw a vital connection between religion and the character needed for republican self-government."

"What the founders understood more than 200 years ago is just as true today," he said, though "(t)here is cause for concern at the present time."

In his Obergefell dissent, Alito said he "anticipated that… 'those who cling to old beliefs will be able to whisper their thoughts in the recesses of their homes, but if they repeat those views in public, they will risk being labeled as bigots and treated as such by governments, employers, and schools.'"

There is already evidence of this happening, he said, such as in a case the Supreme Court declined to hear, in which a pharmacy was being forced to sell emergency contraceptives despite their religious beliefs against them. He said he anticipates even more struggles for religious freedom in the years to come.

"This is not an easy time to be a priest, but priests are desperately needed," he said.

In particular, priests of the 21st century are needed to "express what is essential about the faith in a way that registers with a culture that speaks a different language. It is a daunting task, but that is essentially what was done by brave priests in the past who took the faith to every corner of the globe," he said.

"One priest who especially stands out in my memory is the pastor of the church in New Jersey that we attended before moving to Washington. He had a marvelous way of speaking to the parishioners in a way that was seemingly simple but attractive and ultimately profound."

When asked how his Catholic faith has shaped him, Alito said his faith provides him meaning and purpose.

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"The title of a book by Tolstoy has been translated as What Then Should We Do? My faith gives me an answer. It would be terrible to think that life has no meaning, that we are going nowhere, and that what we do until we die is a matter of indifference. That is what tortures so many today."

He added that the strong family values with which he was raised influenced the way he raised his own family, and that he is grateful for a career that allows him some flexibility to be able to spend time with his family.

"Nothing on this Earth is more important to me than my family," he said.

"I have been fortunate to have jobs that allowed me to control my work schedule to a very great degree," he said. "Very few people today have this luxury, and it is hard for busy people to balance work and family life. Our society needs to do a better job of making this possible."