Classic Poem

Is it not wondrous strange that there should be
Such different tempers 'twixt my friend and me?
I burn with heat when I tobacco take,
But he on th' other side with cold doth shake:
To both 'tis physick, and like physick works,
The cause o' th' various operation lurks
Not in tobacco, which is stil the same,
But in the difference of our bodies frame:
What's meat to this man, poison is to that,
And what makes this man lean, makes that man fat;
What quenches one's thirst, makes another dry;
And what makes this man wel, makes that man dye.
So the same sun we see, hardneth the clay
By his reflex, but melts the wax away;
So the same word of God doth Saul convert,
And softneth his, but hardneth Pharaoh's heart.
What ere the difference of our bodies be,
Lord let the temper of our souls agree,
That so Thy Word the same effect may have
On both of us, not to condemne, but save.