The worst class of sum worked in the every-day world is cyphered by the diseased arithmeticians who are always in the rule of Subtraction as to the merits and successes of others, and never in Addition as to their own.
Truthfulness. He will never willingly tolerate an untruth, but will hate it as much as he loves truth... And is there anything more closely connected with wisdom than truth?
All other swindlers upon earth are nothing to the self-swindlers, and with such pretences did I cheat myself. Surely a curious thing. That I should innocently take a bad half-crown of somebody else's manufacture, is reasonable enough; but that I should knowingly reckon the spurious coin of my own make, as good money!
Time is not an empirical concept. For neither co-existence nor succession would be perceived by us, if the representation of time did not exist as a foundation a priori.
And tell him it's quite true that the best of the philosophers are of no use to their fellows; but that he should blame, not the philosophers, but those who fail to make use of them.