practitioner and another consists, not so much in unequal knowledge, as in unequal care to practise what both of them know.[25] [Footnote 17: Galen calls the Oekonomicus the last book of the Memorabilia (ad Hippokrat. De Articulis, t. xviii. p. 301, Kühn). It professes to be repeated by Xenophon from what he himself _heard_ Sokrates say--[Greek: ê)/kousa de/ pote au)tou= kai\ peri\ oi)konomi/as toia/de dialegome/nou], &c. Sokrates first instructs Kritobulus that economy, or management of property, is an art, governed by rules, and dependent upon principles; next, he recounts to him the lessons which he professes to have himself received from Ischomachus. I have already adverted to the Xenophontic Symposion as containing jocular remarks which some erroneously cite as serious.] [Footnote 18: To _learn_ in this way the actualities of life, and the way of extracting the greatest amount of wheat and barley from a given piece of land, is the sense which Xenophon puts on the word [Greek: philo/sophos] (Xen. Oek. xvi. 9; compare Cyropædia, vi. 1, 41).] [Footnote 19: Xenoph. Oekonom. ii. 3; xi. 3, 4. I have made some observations on the Xenophontic Symposion, comparing it with the Platonic Symposion, in a subsequent chapter of this work, ch. xxvi.] [Footnote 20: Xen. Oekon. ii. 16.] [Footnote 21: Xen. Oekon. vi. 17, xi. 3. [Greek: pro\s pa/ntôn kai\ a)ndrô=n kai\ gunaikô=n, kai\ xe/nôn kai\ a)stô=n, kalo/n te ka)gatho\n e)ponomazo/menon.]] [Footnote 22: Xen. Oekon. xi. 9.] [Footnote 23: Xen. Oekon. xi. 17-21. [Greek: e)n toi=s i(ppokôta/tois te kai\ plousiôta/tois].] [Footnote 24: Xen. Oekon. iv. 2-3, vi. 5-7. Ischomachus asserts that his father had been more devoted to agriculture ([Greek: philogeôrgo/tatos]) than any man at Athens; that he had bought several pieces of land ([Greek: chô/rous]) when out of order, improved them, and then resold them with very large profit, xx. 26.] [Footnote 25: Xen. Oekon. xx. 2-10.] [Side-note: Ischomachus, hero of the Oekonomikus--ideal of an active citizen, cultivator, husband, house-master, &c.]