“More gold had been mined from the mind of men than the earth it self”

Haywood, William D. The Autobiography of Big Bill Haywood. New York: International Publishers, 1929, p. 171.

A variant — "Professor Einstein, the learned scientist, once calculated that if all bees disappeared off the earth, four years later all humans would also have disappeared" — appears in The Irish Beekeeper, v.19-20, 1965-66, p74, citing Abeilles et Fleurs (Bees and Flowers, the house magazine of Union Nationale de l'Apiculture Française) for June 1965. Snopes.com mentions its use in a beekeepers' protest in 1994 in Europe http://www.snopes.com/quotes/einstein/bees.asp suggesting invention and attribution to Einstein for political reasons.
Misattributed

Beware of Pity (1939)

Speech (late 1913), quoted in Thomas Jones, Lloyd George (London: Oxford University Press, 1951), p. 45.
Chancellor of the Exchequer

Grandin, Temple. Thinking in Pictures : My Life with Autism (Expanded Edition).Westminster, MD, USA: Knopf Publishing Group, 2006.

Quale è di pazzia segno più espresso
Che, per altri voler, perder se stesso?
Canto XXIV, stanza 1 (tr. B. Reynolds)
Orlando Furioso (1532)

Source: 1910s, Why Men Fight https://en.wikisource.org/wiki/Why_Men_Fight (1917), pp. 178-179
Context: Men fear thought as they fear nothing else on earth – more than ruin, more even than death. Thought is subversive and revolutionary, destructive and terrible; thought is merciless to privilege, established institutions, and comfortable habits; thought is anarchic and lawless, indifferent to authority, careless of the well-tried wisdom of the ages. Thought looks into the pit of hell and is not afraid. It sees man, a feeble speck, surrounded by unfathomable depths of silence; yet it bears itself proudly, as unmoved as if it were lord of the universe. Thought is great and swift and free, the light of the world, and the chief glory of man.

Source: Making Money

1860s, On Democratic Government (1864)
Context: But the election, along with its incidental and undesirable strife, has done good, too. It has demonstrated that a people's government can sustain a national election in the midst of a great civil war. Until now, it has not been known to the world that this was a possibility. It shows, also, how sound and strong we still are. It shows that even among the candidates of the same party, he who is most devoted to the Union and most opposed to treason can receive most of the people's votes. It shows, also, to the extent yet known, that we have more men now than we had when the war began. Gold is good in its place; but living, brave, and patriotic men are better than gold.