Frank Knight — American Economist born on November 07, 1885, died on April 15, 1972

Frank Hyneman Knight was an American economist who spent most of his career at the University of Chicago, where he became one of the founders of the Chicago school. Nobel laureates Milton Friedman, George Stigler and James M. Buchanan were all students of Knight at Chicago. Ronald Coase said that Knight, without teaching him, was a major influence on his thinking... (wikipedia)

All science is static in the sense that it describes the unchanging aspects of things.
We have to adapt and overcome, that's all we can do.
In the long run all producers are forced to use the most efficient methods or give place to others who do.
There is no sense in making statements that will not continue to be true after they are made.
The possibility of saying anything about a thing rests on the assumption that it preserves its identity, or continues to be the same thing in the respect described, that it will behave in future situations as it has in past.