In truth, whoever is established in the practice of pure, absolute loving service to the Lord must be considered to have already attained all forms of liberation. The devotee naturally takes great pleasure in serving Krishna, and this sublime service of love and devotion to the Lord brings him more joy than these various forms would.

In truth, liberation is regaining one's original spiritual form. It is the return of the being, once freed from all material conceptions of existence, to its original spiritual condition. It is seeing the chains that hold us captive to matter break, and thus regain true freedom.

This is true resurrection.

Becoming conscious of Krishna, God, the Supreme Personality, or spiritually enlightened, and engaging in His service of absolute love—these are the true signs of liberation.

What are the two weaknesses that cause humankind's downfall?

During devotional service performed in the company of pure beings, fully absorbed in Krishna consciousness, certain elements must be completely overcome, particularly our weaknesses of the heart.

The first, which leads to the first downfall, lies in the desire to dominate material nature. This has the effect of leading the holy being to abandon the loving and devotional service offered to the Supreme Lord. And when this tendency to dominate material nature increases, then the second weakness manifests: attachment to matter and the possession of material things. The problems of material existence arise from these weaknesses of the heart.

The two weaknesses that cause humankind's downfall are therefore: the desire to dominate material nature, and attachment to matter and material things.

All beings must adopt Krishna consciousness and engage in devotional service; thus, they will acquire intelligence and become pure. Unless one reaches the level where one knows and understands Krishna and engages in loving and devoted service to His Divine Self, one has not attained perfect intelligence, even though one may appear so to ordinary mortals. The Lord indicates that it is very difficult to know Krishna until one is free from all the consequences of one's sins. To understand, one must first cleanse oneself of all defilement and sinful acts. But the power and purity of loving and devoted service are such that once one engages in it, one naturally reaches the level where one is free from sin.

Loving and devoted service, in fact, derives from the Lord's internal energy.

The Lord tells us why we must absolutely renounce the fruits of our actions.