Not humanity is the measure of things

One should really first try to realize fully, by meditating deeply on the true nature of reality, that not humanity, mankind, human beings, the human manifestation of life, is the measure of things in space and time, but overall all-encompassing existence, which quite oblivious to our exertions, advances over time on and on in its own one right direction. The objective of the Middle Way devoid of extremes, propounded by the Buddha as the correct existential attitude, must then obviously be the abandonment of all fixed views and to reconnect and reconcile us with this existence as a whole as it truly is. The Buddha's Middle Way in its dynamic Eightfold Path form is then an ongoing reflexion at the level of our personal lives of overall existence becoming over time. And as the Eightfold Path leads us towards better, it follows, inductively if you will, that existence as a whole becomes over time towards better. Holy deeds are therefore only those which are in agreement with overall existence and take us forward at the fundamental level of existence. (from http://www.euronet.nl/~advaya/qanda.htm)

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)

By following the Buddha's Middle Way

By following the Buddha's Middle Way you get in tune with overall existence and sorrow starts disappearing. Sorrow is a symptom. It is the indication that one is going against the grain of things. Always bear firmly in mind that there is nothing wrong with existence, how can there be? Clearly, therefore, it is not life that should be improved upon, but man's mistaken way of living it. What one must try to do is to come to terms with existence as it truly is, i.e. as it truly is beyond our commonly limited and biased personal experience of it. A proven way to follow to achieve this is the Buddha's Middle Way devoid of extremes. And to be able to follow this Path one must adhere to the Five Precepts. The very first step is our acceptance of the Five Precepts. The five fundamental Buddhist precepts are not to kill, not to steal, sexual restraint, not to lie, and abstinence from alcohol and drugs. (from http://www.euronet.nl/~advaya/qanda.htm)