“The president whose moral values would permit him to kill his unborn grandchildren if his daughters get pregnant by mistake, that same president has now issued a formal proclamation glorifying sodomite sin!”

In Bitter American Exile, the Shah's Twin Sister, Ashraf, Defends Their Dynasty (1980)

Letter to Mary Jane Truman (14 November 1947)

1960s, Emancipation Proclamation Centennial Address (1962)
Context: When Abraham Lincoln signed the Emancipation Proclamation it was not the act of an opportunistic politician issuing a hollow pronouncement to placate a pressure group. Our truly great presidents were tortured deep in their hearts by the race question. [... ] Lincoln’s torments are well known, his vacillations were facts. In the seething cauldron of ‘62 and ‘63 Lincoln was called the "Baboon President" in the North, and "coward", "assassin" and "savage" in the South. Yet he searched his way to the conclusions embodied in these words, "In giving freedom to the slave we assure freedom to the free, honorable alike in what we give and what we preserve." On this moral foundation he personally prepared the first draft of the Emancipation Proclamation, and to emphasize the decisiveness of his course he called his cabinet together and declared he was not seeking their advice as to its wisdom but only suggestions on subject matter. Lincoln achieved immortality because he issued the Emancipation Proclamation. His hesitation had not stayed his hand when historic necessity charted but one course. No President can be great, or even fit for office, if he attempts to accommodate to injustice to maintain his political balance.

2000s, Bush's Lincolnian Challenge (2002)

Source: Presidents of India, 1950-2003, P.80

1970s, Proclamation 4417 (1976)

Speech on the day of Mohammed's birth (1984)
Foreign policy

2010s, 2017, Interview with Bill Kristol (2017)

Speech at the National Press Club (2004)