Pencil Quotes (2)
Mathematics is the cheapest science. Unlike physics or chemistry, it does not require any expensive equipment. All one needs for mathematics is a pencil and paper.
Quoted in 'And sometimes the mathematician wants a powerful computer', in Donald J. Albers and Gerald L. Alexanderson (eds.), Mathematical People (1985). In John De Pillis, 777 Mathematical Conversation Starters (2002), 193.
See also: | Chemistry (91) | Cost (4) | Equipment (3) | Mathematics (226) | Paper (10) | Physics (70)
The glimpses of chemical industry's services to man afforded by this book could be presented only by utilizing innumerable chemical products. The first outline of its plan began to take shape on chemically produced notepaper with the aid of a chemically-treated graphite held in a synthetic resin pencil. Early corrections were made with erasers of chemically compounded rubber. In its ultimate haven on the shelves of your bookcase, it will rest on a coating of chemical varnish behind a pane of chemically produced glass. Nowhere has it been separated from that industry's products.
Man in a Chemical World (1937), L'Envoi, 284.
See also: | Book (42) | Chemical (6) | Correction (10) | Glass (5) | Industry (21) | Paper (10) | Product (4) | Shelf (2) | Synthetic (2)
