Desiderata: Go placidly amid the noise and the haste

Desiderata is a beautiful poem. The author is Max Ehrmann.  Derideratum means something that is needed or wanted. Ehrmann wrote this poem in 1920 and copyrighted it in 1927.  But since he distributed Desiderata without a copyright notice in 1933 and 1942, he forfeited his US copyright. After his death