
Letter to Allen N. Ford (11 August 1846), reported in Roy Prentice Basler, ed., Abraham Lincoln: His Speeches and Writings (1990 [1946])
1840s
Speech http://books.google.com/books?id=5jIwAAAAYAAJ&q=%22The+only+excuse+that+America+can+ever+have+for+the+assertion+of+her+physical+force+is+that+she+asserts+it+in+behalf+of+the+interests+of+humanity%22&pg=PA23#v=onepage to the Daughters of the American Revolution at Memorial Continental Hall in Washington, D.C. on April 17, 1916
1910s
Letter to Allen N. Ford (11 August 1846), reported in Roy Prentice Basler, ed., Abraham Lincoln: His Speeches and Writings (1990 [1946])
1840s
Direct Action (1912)
Context: Every person who ever thought he had a right to assert, and went boldly and asserted it, himself, or jointly with others that shared his convictions, was a direct actionist. Some thirty years ago I recall that the Salvation Army was vigorously practising direct action in the maintenance of the freedom of its members to speak, assemble, and pray. Over and over they were arrested, fined, and imprisoned; but they kept right on singing, praying, and marching, till they finally compelled their persecutors to let them alone.
The Philosophy of Physical Science (1938)
Context: For the truth of the conclusions of physical science, observation is the supreme Court of Appeal. It does not follow that every item which we confidently accept as physical knowledge has actually been certified by the Court; our confidence is that it would be certified by the Court if it were submitted. But it does follow that every item of physical knowledge is of a form which might be submitted to the Court. It must be such that we can specify (although it may be impracticable to carry out) an observational procedure which would decide whether it is true or not. Clearly a statement cannot be tested by observation unless it is an assertion about the results of observation. Every item of physical knowledge must therefore be an assertion of what has been or would be the result of carrying out a specified observational procedure. <!-- p. 9
Notice sur les Titres et Travaux scientifiques de Pierre Duhem rédigée par lui-même lors de sa candidature à l'Académie des sciences (mai 1913), The Aim and Structure of Physical Theory (1906)