Here is the collection of most important verses of Bhagwadgita :-
61. मत्तः परतरं नान्यत्किञ्चिदस्ति धनञ्जय।
मयि सर्वमिदं प्रोतं सूत्रे मणिगणा इव।।
O conquerer of wealth , there is no truth superior to me . Everything rests upon me as pearls are strung on a thread.
62. रसोऽहमप्सु कौन्तेय प्रभास्मि शशिसूर्ययोः।
प्रणवः सर्ववेदेषु शब्दः खे पौरुषं नृषु।।
O son of Kunti , I am the taste of water, the light of sun and moon , the syllable Om in the Vedic mantras , I am the sound in the ether and the ability in a man .
64. बीजं मां सर्वभूतानां विद्धि पार्थ सनातनम्।
O son of Prtha , know that I am the original seed of all existences, the intelligence of the intelligent , and the prowess of all powerful men.
65. बलं बलवतां चाहं कामरागविवर्जितम्।
धर्माविरुद्धो भूतेषु कामोऽस्मि भरतर्षभ।।
I am the strength of the strong ,devoid of passion and desire .I am sex life which is not contrary to religious principles ,O lord of the Bharatas, Arjuna.
66. त्रिभिर्गुणमयैर्भावैरेभिः सर्वमिदं जगत्।
मोहितं नाभिजानाति मामेभ्यः परमव्ययम्।।
Deluded by the three modes ( goodness , passion and ignorance ), the whole world does not know me , who am above these modes and inexhaustible.
67. दैवी ह्येषा गुणमयी मम माया दुरत्यया।
मामेव ये प्रपद्यन्ते मायामेतां तरन्ति ते।।
This divine energy of mine consisting of the three modes of material nature,is difficult to overcome . But those who have surrendered unto me can easily cross beyond it.
68. न मां दुष्कृतिनो मूढाः प्रपद्यन्ते नराधमाः।
माययापहृतज्ञाना आसुरं भावमाश्रिताः।।
Those miscreants who are grossly foolish ,who are lowest among mankind ,whose knowledge is stolen by illusion and who partake of the athiestic nature of demons do not surrender unto me.
69. चतुर्विधा भजन्ते मां जनाः सुकृतिनोऽर्जुन।
आर्तो जिज्ञासुरर्थार्थी ज्ञानी च भरतर्षभ।।
O ,best among the Bharatas, four kind of pious men begin to render service unto me — the distressed , the desirer of wealth, the inquisitive, and he who is searching for the knowledge of the absolute.
70.बहूनां जन्मनामन्ते ज्ञानवान्मां प्रपद्यते।
वासुदेवः सर्वमिति स महात्मा सुदुर्लभः।।
After many births and deaths , he who is actually in knowledge surrenders unto me , knowing me to be the cause of all causes and all that is . Such a great soul is very rare.
71. अव्यक्तं व्यक्ितमापन्नं मन्यन्ते मामबुद्धयः।
परं भावमजानन्तो ममाव्ययमनुत्तमम्।।
Unintelligent men, who do not know me perfectly ,think that I the supreme personality of Godhead ,Krishna ,was impersonal before and have now assumed this personality Due to their small knowledge they do not know my higher nature which is imperishable and supreme.
72. नाहं प्रकाशः सर्वस्य योगमायासमावृतः।
मूढोऽयं नाभिजानाति लोको मामजमव्ययम्।।
I am never manifest to the foolish and unintelligent .For them I am covered by my internal potency and therefore they do not know that I am unborn and infallible .
73. येषां त्वन्तगतं पापं जनानां पुण्यकर्मणाम्।
ते द्वन्द्वमोहनिर्मुक्ता भजन्ते मां दृढव्रताः।।
Person who have acted piously in previous lives and in this life and whose sinful actions are completely eradicated are freed from the dualities of delusion and they engage themselves in my service with determination .
74.तस्मात्सर्वेषु कालेषु मामनुस्मर युध्य च।
Therefore Arjuna, you should always think of me in the form of Krishna and at the same time carry out your prescribed duty of fighting .With your activities dedicated to me and your mind and intelligence fixed on me , you will attain me without doubt.
75. मामुपेत्य पुनर्जन्म दुःखालयमशाश्वतम्।
नाप्नुवन्ति महात्मानः संसिद्धिं परमां गताः।।
After attaining me, the great souls who are yogis in devotion , never return to this temporary world , which is full of miseries because they have attained the highest perfection.
मामुपेत्य तु कौन्तेय पुनर्जन्म न विद्यते।।
From the highest planet in the material world down to the lowest ,all are places of misery wherein repeated deaths and births takes place .But ,one who attains my abode , O son of Kunti , never takes birth again.
77. सहस्रयुगपर्यन्तमहर्यद्ब्रह्मणो विदुः।
रात्रिं युगसहस्रान्तां तेऽहोरात्रविदो जनाः।
By human calculation, a thousand ages taken together form the duration of Brahma’s one day .And such also is the duration of his night.
78.भूतग्रामः स एवायं भूत्वा भूत्वा प्रलीयते।
रात्र्यागमेऽवशः पार्थ प्रभवत्यहरागमे।।
Again and again , when Brahma’s day arrives all living entities come into being , and with the arrival of Brahma’s day they are helplessly annihilated .
79. परस्तस्मात्तु भावोऽन्योऽव्यक्तोऽव्यक्तात्सनातनः।
यः स सर्वेषु भूतेषु नश्यत्सु न विनश्यति।।
Yet there is another unmanifestnature which is eternal and is and transcendental to this manifested and unmanifested matter. It is supreme and is never annihilated . When all in this world is annihilated ,that part remains as it is.
80.अव्यक्तोऽक्षर इत्युक्तस्तमाहुः परमां गतिम्।
यं प्राप्य न निवर्तन्ते तद्धाम परमं मम।।
That which the Vedantists describe as the unmanifest and infallible ,that which is known as the supreme destination, that place from which having attained it , one never returns , that is my supreme abode.