Advayavada Buddhism is essentially secular

Advayavada Buddhism is an essentially secular, non-dual and life-affirming philosophy and way of life derived from Nagarjuna's Madhyamaka, or philosophy of the Middle Way. Its most important tenet is that there is a fourth sign (or mark) of being implicit in the Buddha's teaching, namely that, expressed purely in terms of human perception and experience, reality is sequential and dynamic in the sense of ever becoming better than before. What human beings experience and identify as good, right or beneficial, indeed as progress (pratipada, patipada), is, in fact, that which takes place in the otherwise indifferent direction that overall existence flows in of its own accord. (from http://www.euronet.nl/~advaya/index.htm)