De Rerum Natura

Almost atop the water. And when the winds

Carry the scattered drifts along the sky

In the night-time, then seem to glide along

The radiant constellations 'gainst the clouds

And there on high to take far other course

From that whereon in truth they're borne. And then,

If haply our hand be set beneath one eye

And press below thereon, then to our gaze

Each object which we gaze on seems to be,

By some sensation twain- then twain the lights

Of lampions burgeoning in flowers of flame,

And twain the furniture in all the house,

Two-fold the visages of fellow-men,

And twain their bodies. And again, when sleep

Has bound our members down in slumber soft

And all the body lies in deep repose,

Yet then we seem to self to be awake

And move our members; and in night's blind gloom

We think to mark the daylight and the sun;

And, shut within a room, yet still we seem

To change our skies, our oceans, rivers, hills,

To cross the plains afoot, and hear new sounds,

Though still the austere silence of the night

Abides around us, and to speak replies,

Though voiceless. Other cases of the sort

Wondrously many do we see, which all

Seek, so to say, to injure faith in sense-

In vain, because the largest part of these

Deceives through mere opinions of the mind,

Which we do add ourselves, feigning to see

What by the senses are not seen at all.

For naught is harder than to separate

Plain facts from dubious, which the mind forthwith

Adds by itself.

Again, if one suppose

That naught is known, he knows not whether this

Itself is able to be known, since he

Confesses naught to know. Therefore with him

I waive discussion- who has set his head

Even where his feet should be. But let me grant

That this he knows,- I question: whence he knows

What 'tis to know and not-to-know in turn,

And what created concept of the truth,

And what device has proved the dubious

To differ from the certain?- since in things

He's heretofore seen naught of true. Thou'lt find

That from the senses first hath been create

Concept of truth, nor can the senses be

Rebutted. For criterion must be found

Worthy of greater trust, which shall defeat

Through own authority the false by true;

What, then, than these our senses must there be

Worthy a greater trust? Shall reason, sprung

From some false sense, prevail to contradict

Those senses, sprung as reason wholly is

From out the senses?- For lest these be true,

All reason also then is falsified.

Or shall the ears have power to blame the eyes,

Or yet the touch the ears? Again, shall taste

Accuse this touch or shall the nose confute

Or eyes defeat it? Methinks not so it is:

For unto each has been divided off

Its function quite apart, its power to each;

And thus we're still constrained to perceive

The soft, the cold, the hot apart, apart

All divers hues and whatso things there be

Conjoined with hues. Likewise the tasting tongue

Has its own power apart, and smells apart

And sounds apart are known. And thus it is

That no one sense can e'er convict another.

Nor shall one sense have power to blame itself,

Because it always must be deemed the same,

Worthy of equal trust. And therefore what

At any time unto these senses showed,

The same is true.

And if the reason be

Unable to unravel us the cause

Why objects, which at hand were square, afar

Seemed rounded, yet it more availeth us,

Lacking the reason, to pretend a cause

For each configuration, than to let

From out our hands escape the obvious things

And injure primal faith in sense, and wreck

All those foundations upon which do rest

Our life and safety. For not only reason

Would topple down; but even our very life

Would straightaway collapse, unless we dared

To trust our senses and to keep away

From headlong heights and places to be shunned

Of a like peril, and to seek with speed

Their opposites! Again, as in a building,

If the first plumb-line be askew, and if

The square deceiving swerve from lines exact,

And if the level waver but the least

In any part, the whole construction then

Must turn out faulty- shelving and askew,

Leaning to back and front, incongruous,

That now some portions seem about to fall,

And falls the whole ere long- betrayed indeed

By first deceiving estimates: so too