Sanskrit Proverb

And whilst I was searching for Mother Theresa's favorite prayer, I stumbled upon this "proverb" which was another motivational thought so I'm saving it here....

Look to this day
For it is life
The very life of life.
In its brief course lie all
The realities and verities of existence
The bliss of growth
The splendor of action
The glory of power

For yesterday is but a dream
And tomorrow is 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.