"...It is ridiculous to try to expel Buddha from Buddhism, which was named after Buddha, and make even Buddha into a nonspiritual conception that can fit into the materialism of ordinary society with its different theories, groups, cultures, laws, and everything that belongs to the worldly phenomena of samsaric beings."
— Thinley Norbu (a must-read book)

http://www.shambhala.com/reflections-on-secular-buddhism-an-excerpt-from-thinley-norbu/?s

Reflections on Secular Buddhism: An Excerpt from Thinley Norbu

Secular Buddhism is for many an oxymoron.  Here, the incomparable teacher Thinley Norbu Rinpoche shares some words on the subject.

"There have also been lectures available on the Internet about "the secular Buddha." This kind of negative characterization cannot be given for the origin of all positive qualities. Buddha is ceaseless, everywhere and in every time, unaffected by anything. Buddha means that all obscurations are purified, including the reality phenomena of human beings who think they are either secular or nonsecular, and that all immeasurable wisdom has expanded. Although Buddha can appear in any aspect, Buddha cannot be put in the tiniest category of secularism.Buddha is fully enlightened with wisdom body, wisdom speech, wisdom mind, wisdom qualities, and wisdom activities, which are indivisibly pervasive and inconceivable, and at the same time manifest in an immeasurable way, so one cannot say that Buddha is either secular or nonsecular. It is ridiculous to try to expel Buddha from Buddhism, which was named after Buddha, and make even Buddha into a nonspiritual conception that can fit into the materialism of ordinary society with its different theories, groups, cultures, laws, and everything that belongs to the worldly phenomena of samsaric beings.