Bhagavad Gita 14.17सत्त्वात्सञ्जायते ज्ञानं रजसो लोभ एव च।प्रमादमोहौ तमसो भवतोऽज्ञानमेव च ॥

From Sattva When Sattva becomes predominant. Sattva awakesn knowledge just as the sun causes daylight. Sattva enlightens the intellect.Greed is insatiable like fire. Greed brings misery and pain. Greed is born of Rajas. Rajas creates insatiable desire. Rajas makes one blind to the interests and the feelings of others. A Rajasic man treats others as tools to be utilised for his own selfadvancement or selfaggrandisement.Tamas produces shortsightedness, torpor and ignorance. A Tamasic man does not think a bit of the future conseences. He completely identifies himself with the body and begins to fight with people if they injure his body or speak ill of him. He is ready to do any sinful act in retaliation. He has no sense of proportion and no sense of balance or poise.