3 gunas (quality)

THE BHAGVADGITA
6. TATRA SATTVAM NIRMALATVAT
PRAKASAKAM ANAMAYAM
SUKHASANGENA BADHNATI
JNANASANGENA CA NAGHA
Of these goodness(satva) being pure,causes illumination and health.It binds o! blameless one by attachment to happiness and by attachment to knowledge.
This 'satvaguna' is pure and illuminates us.We can find it by its qualities.All experiences this happiness and knowledge the mind is so engrossed in this that it does not desire to move beyond but o! blameless (Arjuna) it binds us by joy and knowledge.The quality of satvagun is goodness.When we feel pleasure by any thing a new house,a car,wealth,wife,son then we become happy and we want to stay in such luxuries.Our knowledge also gives us happiness.I know this and that.In such things we create our ego.I am a rich,I am learned,this and that.But for self-realization we have to crone this barrier of satvaguna.
Because we are happy in this guna we do not want to leave happiness we are attached to these things which gives us pleasure in 'rajus guna'(worldly affairs) and in 'tamas' (darkness) we want to leave this conflict but in satvaguna there is no conflict,so we do not want to leave these pleasures because in satva we are near the self it gives light to our mind.But still there are change.It may be of gold but still are change.It binds us in these things and does not come face to face with self.If we want to jump in a canal we have to stand on its edge.Satva is like this.When we jumo we will be one with water so to reach in samadhi (Self-realization) we have to leave the edge of satvaguna.So it binds us with pleasure and knowledge.You have seen so many creatures,scholars they are attache to their wisdom, intelligence.So knowledge of this type binds us.