“ "Once master the machinery of Symbolic Logic, and you have a mental occupation always at hand, of absorbent interest, and one that will be of real use to you in any subject you take up. It will give you clearness of thought – the ability to see your way through a puzzle – the habit of arranging your ideas in an orderly and get-at-able form – and, more valuable than all, the power to detect fallacies, and to tear to pieces the flimsy illogical arguments, which you will so continually encounter in books, in newspapers, in speeches, and even in sermons, and which so easily delude those who have never taken the trouble to master this fascinating Art. Try it. That is all I ask of you!” ”—Lewis Carroll, Symbolic Logic
“ "Despite their remoteness from sense experience, we do have something like a perception also of the objects of set theory, as is seen from the fact that the axioms force themselves upon us as being true. I don’t see any reason why we should have any less confidence in this kind of perception, i.e. in mathematical intuition, than in sense perception." ”— Kurt Gödel, What is Cantor’s Continuum Problem? (tnx wildcat2030)
“ „The discovery of the alphabet will create forgetfulness in the learner’s souls, because they will not use their memories; they will trust to the external written characters and not remember of themselves. You give your disciples not truth but only the semblance of truth; they will be heroes of many things, and will have learned nothing; they will appear to be omniscient and will generally know nothing.” ”—Socrates, Phaedrus, cited in Marshall McLuhan, The Medium is the Massage, Gingko Press, 2001, p. 113.
“ “Well, the human impulse to remember is the fact that biologically we forget. Because we biologically forget most of what we experience, we try to hold on to, cling on to the experiences, the memories, the opinions, the values, the facts that we treasure and therefore want to remember. But the important element of that is that for all of human history, remembering has been hard and costly, and thus required active work and energy to be put into it, while forgetting was easy. Today with the digital tools, it’s the other way around. Digital remembering is the default these days, and forgetting has become much, much harder.” ”—Victor Mayer-Schönberger, professor of internet governance and regulation at the University of Oxford’s Internet Institute, Delete: The Virtue of Forgetting in the Digital Age, Princeton University Press, 2009
“ "The eye sees only what the mind is prepared to comprehend." ”—Robertson Davies, Canadian novelist, playwright, critic, journalist, and professor (1913-1995), Tempest-Tost, Toronto: Clark, Irwin, 1951, p. 127