Chapter 18
Thy Looking-glass                                 
This chapter of 78 slokas, known as moksha sanyãsa yoga, Realization through Abnegation, describes such aspects of human behaviour based on the three natures - virtue, passion, and delusion - and the path of selfless action. And in the end, the relevance of, and the reverence to, the Gita is described. One can note that s12 breaks the continuity between s11 and s13 with hyperbolic averments, and s56 combines what is stated in the preceding and the succeeding slokas, and thus both are seemingly interpolations.
S41- s48 that describe the allotted duties of man on the basis of his caste are clearly interpolations. In essence, the discourse till s 40 is about the human nature and how it affects man. As can be seen, the duties on caste lines detailed in the said interpolations have no continuity of argument. As in earlier chapters, the text acquires continuity if only these verses are bypassed.
S61 avers that the Supreme dwells in humans and deludes them all by his maya. This is contrary to what is stated in s14, ch.5, ‘It’s his nature, but not Spirit / Makes man act by wants induced’.
Thus, s61 clearly is an interpolation as it contravenes the neutrality of the Supreme Spirit in the affairs of man affirmed throughout by Lord Krishna.  
1
 Thus spoke Arjuna:
 Pray Thee tell, for my grasp
 All about sanyãs, path forsake
 And self-denial that’s tyãga.
2
 Thus spoke the Lord:
 Lack inclination, it’s sanyãs 
 Sans wants work what makes tyãga.
3  
 Fault some sages effort per se
 Others give nod to deeds noble.
4  
 Make thee privy of three ways  
 By which, men all give up well.
5  
 Effort, gift ’n austerity
 Take men all on road forsake.  
6  
 Forsake I this vouchsafe when
 Acts man with no axe to grind.
7  
 Avoid obligation, it’s no abnegation  
 Boils it down to, give up of delusion.
8  
 Forgo made easy passionate opt 
 Desist from duties that strain them.
9  
 Indulge virtuous in their work
 With no thought of its outcome.
10  
 With no illusion but diligence 
 Carries renunciant his duties
 Agreeable or otherwise too.
11  
 Needs one work to sustain life
 Relinquients avoid, overloads all. 
13  
 Factors five all deeds engulf
 Know them well to free thyself.
14  
 Prone are acts to these aspects -
 Body to sustain, ego that goads 
 Senses thy lure, life to guard
 Faith in deities that tends thee.
15  
 Be well or so be ill
 In word, thought ’n deed as well
 Sourced are acts in these aspects. 
16  
 Ignoramus in vain ascribe
 Acts of theirs to Spirit in them.
17 
 It’s for thee to realize now
 That by killing these Kauravs
 Slay thee none of them thyself.
18  
 Aspects knowable, known ’n knower 
 Lead to duty, deed ’n doer, in that order.
19  
 Knowable as well deeds ’n doers 
 Bracket those freed in three groups.
20  
 Lay indivisible in frames divisible
 Realize virtuous Spirit not perishable. 
21
 Spirit in them ’n others that lies
 Apart ’n unique feel passionate.  
22  
 Failing to see beyond the self
 Deluded think like frog in well.  
23  
 Illusions of life virtuous
 See in light of limitations 
 Thus thou carry businesslike  
 Duties that their life ordains.
24  
 In want passionate come to live
 Bogged down by, what they eye. 
25 
 Deluded work in reckless ways  
 Harm their cause ’n others’ as well.
26 
 Taking well and ever at ease
 Senses honed ’n ego evened           
 Detached virtuous ever engage. 
27                   
 Mind as covetous ’n thought impure 
 Crave passionate all things mundane 
 Which them excite as well pull down.
28  
 Verily deluded, vulgar ’n vacillate 
 Arrogant, dishonest, ignorant ’n malicious 
 Indolent being remain they gloomy.
29  
 By natures of these beings 
 Features intellect theirs vary. 
30  
 Deal virtuous in measures equal 
 Weigh they fine all deeds their fair.
31  
 Perspective lack passionate right 
 In weird ways they tend their lives.
32 
 Given their state of perversion 
 Go all deluded in wrong path.
33  
 Virtuous ever in self-control  
 Steady they wavering mind of theirs.
34  
 Things that seem to bring joys 
 Passionate all with zeal pursue.
35 
 Proud ’n arrogant, doubting ’n grieving
 Bog down deluded in despair. 
36  
 Make a note of these three ways
 Pains which banish ’n fetch bliss.
37  
 What fail sprint ’n serve long run 
 Virtuous know keep woes at bay.
38  
 It’s the way with thy passion
 To jump at all that what might tempt  
 Which would turn sour in due course.
39  
 Ever in day-dreams      
 End up deluded in dreamlands.
40  
 Beyond the pale of these natures
 None ever exists in three worlds.
49
 With no want
 Allegiant to none, 
 Freed from action
 Thou forsake. 
50  
 Leads how forsake to Brahman   
 Know that Wisdom Supreme now.
51 
 With pure mind ’n will that’s strong 
 Wants thou void and firm thy self – 
52  
 Frugal of food, thoughts reined in 
 Dwell in self thou sans passion –
53  
 Lack thou pride, wish ’n wrath  
 Give up ego, crave not power  
 Be content and live in peace
 It’s then thou come near Brahman.
54  
 Treat all beings ever equal 
 And in devotion live tranquil.
 It’s thou attain State Brahman. 
55  
 It’s then one would know Me true
 That tends him to be one with Me.
57 
 Let thy faith in Me be strong
 Take Me thou for thy shelter
 And ever thee act as My agent.
58
 It’s all smooth sail if heeded
 At thy peril thou this ignore.
59  
 It’s thine ego sues for peace 
 But prevails what is thy nature.
60  
 Sidetrack might thine illusions  
 But nature thine would shape thy deeds. 
62  
 Fix thy mind on Me Supreme 
 Find thou peace in My refuge. 
63  
 That thee heard of this wisdom  
 For task on hand now apply mind.
64    
 O, dear friend, let Me tell
 Word My final that benefits.
65  
 If one remains to Me firm
 It’s My promise I take him.
66  
 Set all aside ’n have faith
 Thus sans sin, reach Me thou.
67 
 None of this for those who lack
 Faith in Me and selfless work.  
68  
 Whoso passes this secret
 To devout Mine all reach Me true.
69 
 Know not I a dearer soul 
 None there ever a better service.
70  
 Who that studies this discourse   
 He Me prays in true wisdom.
71  
 Hears this whoso in good faith 
 Attains he the Worlds Higher.
72  
 Looks as if thou got it right
 Let not delusions rule thy head.
73  
 Thus spoke Arjuna:
 Glad O Lord
 Gone are doubts, 
 Sense I gained  
 With Thy words.
74  
 Thus spoke Sanjaya:
 It’s what I’ve heard of that stirring 
 Dialogue between these great souls
 Krishn and Arjun as they spoke.
75  
 It’s with Vyasa’s grace I've heard
 This peerless art of yogic life 
 Which Lord Krishna taught Pãrtha.
76  
 Found I thrilling, dialogue stirring 
 Reminiscing I rejoice, again and again.
77  
 What a wondrous Form that was
 Recalling I rejoice, again and again. 
78   
 Wherever yogic Lord Krishna 
 Joins hands with great Paartha   
 Goddess Victory, spreads carpet
 Heaven on earth to set there ever.
Ends thus:
 Thy Looking-glass  
 The Eighteenth Chapter
 Of Vyãsã’s classic 
 Bhagavad-Gita.
May hear the author's audio rendition of this text in YouTube https://www.youtube.com/watch?v=6vFU3-LD4iM