“I expect the officers of the Atlantic Fleet to be the leaders of what may be called the pioneering spirit- to lead in the determination that the difficulties and discomforts- personnel, materiel, operations, waiting- shall be dealt with as "enemies" to be overcome by our own efforts.”

On Coalition Government (1945)

Foreword, in United States Submarine Operations in World War II. (1949) by Theodore Roscoe, p. v
Context: When I assumed command of the Pacific Fleet in 31 December, 1941; our submarines were already operating against the enemy, the only units of the Fleet that could come to grips with the Japanese for months to come.
It was to the Submarine Force that I looked to carry the load until our great industrial activity could produce the weapons we so sorely needed to carry the war to the enemy. It is to the everlasting honor and glory of our submarine personnel that they never failed us in our days of peril.

Quoted in Peter Charles Smith, The Great Ships Pass: British Battleships at War (1977).

Letter to George Washington (August 1778)

As quoted in Historic Ship Exhibits in the United States (1969), by United States Naval History Division, United States Navy, p. 24

Letter to George Washington (9 October 1776)

Vol. VIII.
Yoshida Shoin Zenshu

Source: 1930s-1951, Philosophical Occasions 1912-1951 (1993), Ch. 9 : Philosophy (chapters 86–93 of the so called Big Typescript), p. 161
Corresponding to TS 213, Kapitel 86
Context: What makes a subject difficult to understand — if it is significant, important — is not that some special instruction about abstruse things is necessary to understand it. Rather it is the contrast between the understanding of the subject and what most people want to see. Because of this the very things that are most obvious can become the most difficult to understand. What has to be overcome is not difficulty of the intellect but of the will. [Nicht eine Schwierigkeit des Verstandes, sondern des Willens ist zu überwinden. ]

1963, American University speech