Nice quote

    不闻不若闻之，      Not having heard is not as good as having heard,


    闻之不若见之，      having heard is not as good as having seen,


    见之不若知之，      having seen is not as good as mentally knowing,


    知之不若行之；      mentally knowing is not as good as putting into action;


    学至于行之而止矣    true learning is complete only when action has been put forth


           -- 荀子                                    -- Xunzi