Joyzelle, Act i, reported in Bartlett's Familiar Quotations, 10th ed. (1919)
So long as we continue to raise more men who demand more food and clothes and fuel, we are subject to the limitations of the material universe, and what we get ever costs us more and benefits us less. But when we cease to demand more, and begin to demand better, commodities, more delicate, highly finished and harmonious, we can increase the enjoyment without adding to the cost or exhausting the store. What artist would not laugh at the suggestion that the materials of his art, his colours, clay, marble, or what else he wrought in, might fail and his art come to an end? When we are dealing with qualitative, i.e. artistic, goods, we see at once how an infinite expenditure of labour may be given, an infinite satisfaction taken, from the meagrest quantity of matter and space. In proportion as a community comes to substitute a qualitative for a quantitative standard of living, it escapes the limitations imposed by matter upon man. Art knows no restrictions of space or size, and in proportion as we attain the art of living we shall be likewise free.
The Evolution of Modern Capitalism: A Study of Machine Production (1906), Ch. XVII Civilisation and Industrial Development
Source: Think Big: Unleashing Your Potential for Excellence
The Evolution of Modern Capitalism: A Study of Machine Production (1906), Ch. XVII Civilisation and Industrial Development
Context: The case is a simple one. A mere increase in the variety of our material consumption relieves the strain imposed upon man by the limits of the material universe, for such variety enables him to utilise a larger proportion of the aggregate of matter. But in proportion as we add to mere variety a higher appreciation of those adaptations of matter which are due to human skill, and which we call Art, we pass outside the limits of matter and are no longer the slaves of roods and acres and a law of diminishing returns. So long as we continue to raise more men who demand more food and clothes and fuel, we are subject to the limitations of the material universe, and what we get ever costs us more and benefits us less. But when we cease to demand more, and begin to demand better, commodities, more delicate, highly finished and harmonious, we can increase the enjoyment without adding to the cost or exhausting the store. What artist would not laugh at the suggestion that the materials of his art, his colours, clay, marble, or what else he wrought in, might fail and his art come to an end? When we are dealing with qualitative, i. e. artistic, goods, we see at once how an infinite expenditure of labour may be given, an infinite satisfaction taken, from the meagrest quantity of matter and space. In proportion as a community comes to substitute a qualitative for a quantitative standard of living, it escapes the limitations imposed by matter upon man. Art knows no restrictions of space or size, and in proportion as we attain the art of living we shall be likewise free. <!--section 16, p. 431
“Our only limitations are those we set up in our own minds”
Variant: The only limitation is that which one sets up in one's own mind.
Source: Think and Grow Rich: The Landmark Bestseller - Now Revised and Updated for the 21st Century
On Protracted Warfare (1938)
Original: (zh-CN) 指导战争的人们不能超越客观条件许可的限度期求战争的胜利，然而可以而且必须在客观条件的限度之内，能动地争取战争的胜利。战争指挥员活动的舞台，必须建筑在客观条件的许可之上，然而他们凭借这个舞台，却可以导演出很多有声有色、威武雄壮的戏剧来。
“The only rules comedy can tolerate are those of taste, and the only limitations those of libel.”
"The Duchess and the Bugs", 'Lanterns & Lances (1961). The piece was "a response" to an award Thurber received from the Ohioana Library Association in 1953.
From Lanterns and Lances
