That moment is gone forever,

Like lightning that flashed and died,

Like a snowflake upon the river,

Like a sunbeam upon the tide, 

Which the dark shadows hide. 

Percy Bysshe Shelley

“Happy the man, and happy he alone,
he who can call today his own:
he who, secure within, can say,
Tomorrow do thy worst, for I have lived today.

Be fair or foul, or rain or shine
the joys I have possessed, in spite of fate, are mine.
Not Heaven itself, upon the past has power,
but what has been, has been, and I have had my hour.”  Horace

To be, or not to be, that is the question:

Whether 'tis nobler in the mind to suffer

The slings and arrows of outrageous fortune,

Or to take arms against a sea of troubles

And by opposing end them. To die—to sleep,

No more; and by a sleep to say we end

The heart-ache and the thousand natural shocks

That flesh is heir to: 'tis a consummation

Devoutly to be wish'd. To die, to sleep;

To sleep, perchance to dream—ay, there's the rub:

For in that sleep of death what dreams may come,

When we have shuffled off this mortal coil,

Must give us pause—there's the respect

That makes calamity of so long life.

For who would bear the whips and scorns of time,

Th'oppressor's wrong, the proud man's contumely,

The pangs of dispriz'd love, the law's delay,

The insolence of office, and the spurns

That patient merit of th'unworthy takes,

When he himself might his quietus make

With a bare bodkin? Who would fardels bear,

To grunt and sweat under a weary life,

But that the dread of something after death,

The undiscovere'd country, from whose bourn

No traveller returns, puzzles the will,

And makes us rather bear those ills we have

Than fly to others that we know not of?

Thus conscience doth make cowards of us all,

And thus the native hue of resolution

Is sicklied o'er with the pale cast of thought,

And enterprises of great pith and moment

With this regard their currents turn awry

And lose the name of action.

To be, or not to be, that is the question

William Shakespeare