“A few years' experience will convince us that those things which at the time they happened we regarded as our greatest misfortunes have proved our greatest blessings. Of this awful truth no person has lived to my age without seeing abundant proof.”
Letter to his daughter Sarah Mason McCarty after the death of an infand daughter (10 February 1785), published in The Life of George Mason, 1725-1792 Vol. 2 (1892) by Kate Mason Rowland, p. 74
Context: A few years' experience will convince us that those things which at the time they happened we regarded as our greatest misfortunes have proved our greatest blessings. Of this awful truth no person has lived to my age without seeing abundant proof. Your dear baby has died innocent and blameless, and has been called away by an all wise and merciful Creator, most probably from a life of misery and misfortune, and most certainly to one of happiness and bliss.
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George Mason 54
American delegate from Virginia to the U.S. Constitutional … 1725–1792Related quotes
“It is the greatest truth of our age: Information is not knowledge.”

1910s, Address to the Knights of Columbus (1915)
Context: Our nation was founded to perpetuate democratic principles. These principles are that each man is to be treated on his worth as a man without regard to the land from which his forefathers came and without regard to the creed which he professes. If the United States proves false to these principles of civil and religious liberty, it will have inflicted the greatest blow on the system of free popular government that has ever been inflicted. Here we have had a virgin continent on which to try the experiment of making out of divers race stocks a new nation and of treating all the citizens of that nation in such a fashion as to preserve them equality of opportunity in industrial, civil, and political life. Our duty is to secure each man against any injustice by his fellows.

Source: Christianity and the Social Crisis (1907), Introduction, p.xv

Journal entry (10 December 1801)
Context: Almost all our misfortunes in life come from the wrong notions we have about the things that happen to us. To know men thoroughly, to judge events sanely, is, therefore, a great step towards happiness.

Speech upon receiving the Freedom of the Burgh of Inverness, Scotland (13 June 1930), published in This Torch of Freedom (1935), pp. 191-192.
1930

Source: The Story Of The Bible, Chapter X, The Position Today, p. 144
“What is liberal education,” pp. 7-8
Liberalism Ancient and Modern (1968)