Strange our situation here upon earth.
Each of us comes for a short visit, not knowing why,
yet sometimes seeming to a divine purpose.
From the standpoint of daily life, however,
there is one thing we do know:
That we are here for the sake of others. . .
for countless unknown souls with whose fate
we are connected by a bond of sympathy.
Many times a day, I realize how much my own
outer and inner life is built upon the labors of other people,
both living and dead and how earnestly I must exert myself
in order to give in return as much as I have received
and am still receiving.

–Albert Einstein