The Buddha was asked this question: Why do the noble beings who have developed their minds appear so calm and radiant? The Buddha replied:
‘They sorrow not for what is past,
They yearn not after that which is not come,
The present is sufficient for them:
Hence it is they appear so radiant.
By having longing for the future,
By sorrowing over what is past,
By this fools are withered up
As a cut-down tender reed.’
Look to this day. In its brief course lie all the verities of existence – Action, love, transience. Yesterday is but a dream, and tomorrow veiled. Live Now!
– How to live without fear and worry, K. Sri Dhammaananda