We can now return to the distinction between language and symbolism. A symbol is language and yet not language. A mathematical or logical or any othe… - R. G. Collingwood

Knowledge as a past fact, as something dead and done with — knowledge by the time it gets into encyclopaedias and text-books — does consist of assertion, and those who treat it as an affair of encyclopaedias and text-books may be forgiven for thinking that it is assertion and nothing else. But those who look upon it as an affair of discovery and exploration have never fallen into that error. People who are acquainted with knowledge at first hand have always known that assertions are only answers to questions. So Plato described true knowledge as 'dialectic', the interplay of question and answer in the soul's dialogue with itself; so Bacon pointed out once for all that the scientist's real work was to interrogate nature, to put her, if need be, to the torture as a reluctant witness; so Kant mildly remarked that the test of an intelligent man was to know what questions to ask, and the same truth has lately dawned on the astonished gaze of the pragmatists. Questioning is the cutting edge of knowledge, assertion is the dead weight behind the edge that gives it driving force

Perfect freedom is reserved for the man who lives by his own work and in that work does what he wants to do.

The chief business of seventeenth-century philosophy was to reckon with seventeenth-century science... the chief business of twentieth-century philosophy is to reckon with twentieth-century history.