“As the Spanish proverb says, "He, who would bring home the wealth of the Indies, must carry the wealth of the Indies with him." So it is in travelling; a man must carry knowledge with him, if he would bring home knowledge.”
April 17, 1778, p. 396
Life of Samuel Johnson (1791), Vol III
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Samuel Johnson 362
English writer 1709–1784Related quotes

“The snail lives the way I like to live; he carries his own home with him.”

This is how we all are.
John Banville: Who cares whodunnit? (2013)

Why I Am An Agnostic (1929)
Context: An agnostic is a doubter. The word is generally applied to those who doubt the verity of accepted religious creeds of faiths. Everyone is an agnostic as to the beliefs or creeds they do not accept. Catholics are agnostic to the Protestant creeds, and the Protestants are agnostic to the Catholic creed. Any one who thinks is an agnostic about something, otherwise he must believe that he is possessed of all knowledge. And the proper place for such a person is in the madhouse or the home for the feeble-minded. In a popular way, in the western world, an agnostic is one who doubts or disbelieves the main tenets of the Christian faith.

Source: The Economics of Welfare (1920), Ch. 1 : Welfare and Economic Welfare, § 1