Robert P. Crease quotes:

Tacit knowledge is one of the most important concepts of current scholarship in the humanities. Ambitious and important, Tacit and Explicit Knowledge is a well-written and original book.

Equations seem like treasures, spotted in the rough by some discerning individual, plucked and examined, placed in the grand storehouse of knowledge, passed on from generation to generation. This is so convenient a way to present scientific discovery, and so useful for textbooks, that it can be called the treasure-hunt picture of knowledge.