Zen lives in the present. The Whole teaching is: how to be in the present; how to get out of the past which is no more and how not to get involved in the future which is not yet, and just to be rooted, centered, in that which is.
Rajneesh
Old friends pass away,
Old friends pass away, new friends appear. It is just like the days. An old day passes, a new day arrives. The important thing is to make it meaningful: a meaningful friend – or a meaningful day. Dalai Lama