As the heat of a fire reduces wood to ashes, the fire of knowledge burns to ashes all karma. Nothing in this world purifies like spiritual wisdom. It is the perfection achieved in time through the path of yoga, the path which leads to the Self within.
Only by devotional service is the Supreme Truth, Krishna, pleased, and by His inconceivable energy. He can reveal Himself to the heart of the pure devotee.
To whom praise and blame are equal, who is silent, content with every fortune, home-renouncing, steadfast in mind, and worships Me, that person is dear to me.
Whenever there is a decline of righteousness, O Arjuna, and the rise of unrighteousness, then I manifest myself.
They are forever free who renounce all selfish desires and break away from the ego-cage of ‘I’, ‘me’, and ‘mine’ to be united with the Lord. Attain to this, and pass from death to immortality.
This is true knowledge: to seek the Self as the true end of wisdom always. To seek anything else is ignorance.
Under the influence of false ego one thinks himself to be the doer of activities, while in reality all activities are carried out by nature as a natural process.
All created beings are unmanifest in their beginning, manifest in their interim state and unmanifest again when they are annihilated. So what need is there for lamentation?

