John Wilkins has lightly edited it to bring it up to date.
Compare and contrast the final lines, and weep.
Remember what happened after 1933, because:
Progress, far from consisting in change, depends on retentiveness. When change is absolute there remains no being to improve and no direction is set for possible improvement: and when experience is not retained, as among savages, infancy is perpetual. Those who cannot remember the past are condemned to repeat it.
(George Santayana, 1905)