Look to this day!
For it is life, the very life of life.
In its brief course
Lie all the verities and realities of your existence:
The bliss of growth
The glory of action
The splendour of beauty,
For yesterday is but a dream
And tomorrow only a vision,
But today well lived makes every yesterday a dream
of happiness
And every tomorrow a vision of hope.
Look well, therefore, to this day!
Such is the salutation of the dawn.

– Kalidasa

Look To This Day, poem by the Indian poet and dramatist, translated from Sanskrit.