On the nature of things (books 1 - 3)   

To hurry help to a house afire.- At once
He yawns, as soon as foot has touched the threshold,
Or drowsily goes off in sleep and seeks
Forgetfulness, or maybe bustles about
And makes for town again. In such a way
Each human flees himself- a self in sooth,
As happens, he by no means can escape;
And willy-nilly he cleaves to it and loathes,
Sick, sick, and guessing not the cause of ail.
Yet should he see but that, O chiefly then,
Leaving all else, he'd study to divine
The nature of things, since here is in debate
Eternal time and not the single hour,
Mortal's estate in whatsoever remains
After great death.
And too, when all is said,
What evil lust of life is this so great
Subdues us to live, so dreadfully distraught
In perils and alarms? one fixed end
Of life abideth for mortality;
Death's not to shun, and we must go to meet.
Besides we're busied with the same devices,
Ever and ever, and we are at them ever,
And there's no new delight that may be forged
By living on. But whilst the thing we long for
Is lacking, that seems good above all else;
Thereafter, when we've touched it, something else
We long for; ever one equal thirst of life
Grips us agape. And doubtful 'tis what fortune
The future times may carry, or what be
That chance may bring, or what the issue next
Awaiting us. Nor by prolonging life
Take we the least away from death's own time,
Nor can we pluck one moment off, whereby
To minish the aeons of our state of death.
Therefore, O man, by living on, fulfil
As many generations as thou may:
Eternal death shall there be waiting still;
And he who died with light of yesterday
Shall be no briefer time in death's No-more
Than he who perished months or years before.