contemplation about the nature of the soul and of happiness
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There is quote by Jane Austin in Pride & Prejudice: “Until I have your goodness I cannot have your happiness.”
To really be something is to have the power to do that forever. Krsna makes this ontological distinction in the Gita: “Never did I not exist nor you nor all these kings nor is it the case that we shall not exist hereafter.”
Happiness is to find out who you really are. The soul is eternal.