Desiderata

Go placidly amid the noise and the haste, and remember what peace there may
be in silence. As far as possible without surrender, be on good terms with
all persons. Speak your truth quietly and clearly and listen to others, even
to the dull and ignorant they too have their story. Avoid loud and
aggressive persons; they are vexatious to the spirit. If you compare courses
with others, you may become vain or bitter, for always there will be greater
and lesser persons than yourself. Enjoy your achievements as well as your
plans. Keep interested in your own career, however humble; it is a real
possession in the changing fortunes of time. Exercise caution in your
business affairs, for the world is full of trickery. But let this not blind
you to what virtue there is; many persons strive for high ideals, and
everywhere life is full of heroism. Be yourself. Especially do not feign
affection. Neither be cynical about love; for in the face of all aridity and
disenchantment, it is as perennial as the grass. Take kindly the counsel of
the years, gracefully surrendering the things of youth. Nurture strength of
spirit to shield you in sudden misfortune. But do not distress yourself
with dark imaginings. Many fears are born of fatigue and loneliness. Beyond
a wholesome discipline, be gentle with yourself. You are a child of the
universe no less than the trees and the stars you have a right to be here.
And whether or not is clear to you, no doubt the universe is unfolding as it
should. Therefore be at peace with God, whatever you conceive Him to be.
And whatever your labours and aspirations, in the noisy confusion of life,
keep peace in your soul. With all its sham, drudgery and broken dreams, it
is still a beautify world. Be cheerful. Strive to be happy.

Max Ehrmann, died September 9th 1945

The world-famous poem "Desiderata" was not written in an "old church" or by an "old church sexton" a many people thought. 
It was written in 1927 by the scholar and poet Max Ehrmann, and represents his philosophy on life.