Pilgrim's Progress §4: May I not write in such a style as this?

May I not write in such a style as this? In such a method, too, and yet not miss My end--thy good? Why may it not be done? Dark clouds bring waters, when the bright bring none. Yea, dark or bright, if they their silver drops Cause to descend, the earth, by yielding crops, Gives praise to both, and carpeth not at either, But treasures up the fruit they yield together; Yea, so commixes both, that in her fruit None can distinguish this from that: they suit Her well when hungry; but, if she be full, She spews out both, and makes their blessings null. You see the ways the fisherman doth take To catch the fish; what engines doth he make? Behold how he engageth all his wits; Also his snares, lines, angles, hooks, and nets; Yet fish there be, that neither hook, nor line, Nor snare, nor net, nor engine can make thine: They must be groped for, and be tickled too, Or they will not be catch'd, whate'er you do. How does the fowler seek to catch his game By divers means! all which one cannot name: His guns, his nets, his lime-twigs, light, and bell: He creeps, he goes, he stands; yea, who can tell Of all his postures? Yet there's none of these Will make him master of what fowls he please. Yea, he must pipe and whistle to catch this, Yet, if he does so, that bird he will miss. If that a pearl may in a toad's head dwell, And may be found too in an oyster-shell; If things that promise nothing do contain What better is than gold; who will disdain, That have an inkling of it, there to look, That they may find it? Now, my little book, (Though void of all these paintings that may make It with this or the other man to take) Is not without those things that do excel What do in brave but empty notions dwell.