No achievement of man in the progress of civilization has had a more rapid expansion.
Calvin Coolidge: “No achievement of man in the progress of civilization has had a more rapid expansion.”
On the recordDecember 11, 1928
Source
presidency.ucsb.eduEditor's note · Context
Address to the International Civil Aeronautics Conference in Washington, D.C.
Share
More from Calvin Coolidge
Mar 1, 1929
Mr. James W. Girard may be reinstated as Logging Engineer, $3800 per annum, in the Forest Service, without regard to the time limit on eligibility for reinstatement fixed by the rules.
Mar 1, 1929
No employee entitled to military preference in appointment shall be discharged or dropped or reduced in rank or salary if his record is good.
Mar 1, 1929
I, Calvin Coolidge, President of the United States of America, pursuant to the authority vested in me by law, do hereby amend Executive Order No. 4846-A, dated March 30, 1928, to include the assignment of the frequencies of 6120 kilocycles…





