Page 2 of http://www.hpl.hp.com/personal/Vinay_Deolalikar/Papers/pnp_updated.pdf
To be human, a limited, interconnected being, at one's highest, is to offer something to this ephemeral world, knowing that death awaits. And to offer it gratefully, as if the opportunity of creating something wonderful is something which only a few receive.
The furthest reaches of our potential lie not in abhorring our limitations and living in a void away from suffering, but in creating happiness, joy and fulfillment.
Not in pessimism and negation ("I am not", "I will not", "I must not"), but in affirmation and creation ("I am", "I will", "I must").