“A principal aim of education is to give students a taste for literature, for the books of life and power, and to accomplish this, it is necessary that their minds be held aloof from the babblement and discussions of the hour, that they may accustom themselves to take interest in the words and deeds of the greatest men, and so make themselves able and worthy to shape a larger and nobler future; but if their hours of leisure are spent over journals and reviews, they will, in later years, become the helpless victims of the newspaper habit.”

Source: We Make the Road by Walking: Conversations on Education and Social Change

The Architecture of Theories (1891)

The Dominant Idea (1910)
Context: It is not to be supposed that any one will attain to the full realization of what he purposes, even when those purposes do not involve united action with others; he will fall short; he will in some measure be overcome by contending or inert opposition. But something he will attain, if he continues to aim high.
What, then, would I have? you ask. I would have men invest themselves with the dignity of an aim higher than the chase for wealth; choose a thing to do in life outside of the making of things, and keep it in mind, — not for a day, nor a year, but for a life-time. And then keep faith with themselves! Not be a light-o'-love, to-day professing this and to-morrow that, and easily reading oneself out of both whenever it becomes convenient; not advocating a thing to-day and to-morrow kissing its enemies' sleeve, with that weak, coward cry in the mouth, "Circumstances make me." Take a good look into yourself, and if you love Things and the power and the plenitude of Things better than you love your own dignity, human dignity, Oh, say so, say so! Say it to yourself, and abide by it. But do not blow hot and cold in one breath. Do not try to be a social reformer and a respected possessor of Things at the same time. Do not preach the straight and narrow way while going joyously upon the wide one. Preach the wide one, or do not preach at all; but do not fool yourself by saying you would like to help usher in a free society, but you cannot sacrifice an armchair for it.

1747
Letters to His Son on the Art of Becoming a Man of the World and a Gentleman (1774)
Variant: I recommend you to take care of the minutes: for hours will take care of themselves.

The Three Warning Circles (1972).

Inauguration of Library of Birmingham, Jan 2013

Source: Dictionary of Burning Words of Brilliant Writers (1895), P. 515.

Pt. 1, ch. 1, sct. 2
A Burnt-Out Case (1960)

Quoted in The Montreal Weekly Star (22 August 1885), and War in the West : Voices of the 1885 Rebellion (1985) by Rudy Henry Wiebe and Bob Beal, p. 2