Mind can cause suffering or it can give liberation, like wick can blacken lamp by burning improperly or brighten the room by properly burning.

[SB 5.11.8]
When the flame in a lamp burns the wick improperly, the lamp is blackened, but when the lamp is filled with ghee and is burning properly, there is bright illumination. Similarly, when the mind is absorbed in material sense gratification, it causes suffering, and when detached from material sense gratification, it brings about the original brightness of Krishna consciousness.


[SB 6.4.24]
As the sense objects (smell, touch, form etc) cannot see the senses (nose, skin, eyes), the conditioned soul cannot see the directing Supersoul.

As the various servants in the different departments of big establishments cannot see the supreme managing director under whom they are working, the conditioned souls cannot see the supreme friend sitting within their bodies.

[SB 6.4.34]
As the air carries various characteristics of the physical elements, like the aroma of a flower or colors resulting from a mixture of dust in the air, the Lord appears through lower systems of worship according to one's desires, although He appears as the demigods and not in His original form.

[SB 6.16.6]
Just as gold and other commodities are continually transferred from one place to another in due course of purchase and sale, so the living entity, as a result of his fruitive activities, wanders throughout the entire universe, being injected into various bodies in different species of life by one kind of father after another.

when someone's wealth falls into the bands of his enemy, the money becomes the enemy's friend. Then the enemy can use it for his own purposes. Indeed, he can even use it to harm its previous owner. Therefore the money belongs neither to the one party nor to the other. The money is always money, but in different situations it can be used as an enemy or a friend.


[SB 6.16.7]
An animal may remain in the custody of a human being for some time, and then the same animal may be transferred to the possession of other human beings. As soon as the animal goes away, the former proprietor no longer has a sense of ownership. As long as the animal is in his possession he certainly has an affinity for it, but as soon as the animal is sold, the affinity is lost.

[SB 7.13.29]
Just as a deer, because of ignorance, cannot see the water within a well covered by grass, but runs after water elsewhere, the living entity covered by the material body does not see the happiness within himself, but runs after happiness in the material world.