Get acting, do things; be sane; don’t fritter away your time; create; act; take a place wherever you are and be somebody; get action ….

Theodore Roosevelt (1858–1919) American politician, statesman, conservationist, writer, US President (1901–1909)

(Attributed)

To the Rough Riders, on their mustering out in 1908. In Eugene Thwing, The Life and Meaning of Theodore Roosevelt, ch. 5 "Rough Riders and Spaniards" (1919). Full text.