„Co se týče kabinetních pomůcek a modelů, jde mi vždy o to, aby si i ti nejnevšímavější žáci pomůcky všimli. Proto například při výkladu o veverce používám zásadně vycpaniny klokanice, ovšem se zašitou kapsou. Veškeré červy demonstruji na hadech. Mikroskop nepotřebuji.“

Absturz des Himmels

[(en) A jail is just like a nut with a worm in it. The worm can always get out.]
Zdroj: [2006, Steel shavings, Svazek 37, Indiana University Northwest, 130, angličtina]

Zdroj: [KDO BYL KDO v našich dějinách ve 20. století, http://libri.cz/databaze/kdo20/list.php?od=l&start=1&count=20, 2016-07-27, Libri]

Originál: (en) As touching nature, I was a worm of this earth, and yet a subject of this commonwealth; but as touching the office whereunto it had pleased God to place me, I was a watchman, both over the realm and over the kirk of God gathered within the same; by reason whereof I was bound in conscience to blow the trumpet publicly.
Zdroj: [M'Gavin, William, The History of the Reformation of Religion in Scotland, by John Knox; to which are Appended, Several Other Pieces of His Writing; Including the First Book of Discipline, Complete, and His Dispute with the Abbot of Crossraguel, Not Given with Any Former Edition. With a Memoir, Historical Introduction, and Notes, https://books.google.cz/books?id=XepiAAAAcAAJ&printsec=frontcover&hl=cs&source=gbs_ge_summary_r&cad=0#v=onepage&q&f=false, Blackie & Fullarton, Glasgow, 1831, 581, 298, angličtina]

Originál: (en) Women are not like snakes, they are snakes.
Zdroj: [Chilvers, Ian, Glaves-Smith, John R., 2009, Oxford Dictionary of Modern and Contemporary Art, Oxford University Press, angličtina, 978-0-19923-965-8]

Vnitřní smysl Nového zákona, Vysvětlivky

Zdroj: [Novák, Jan Václav, Vorovka, Karel, Kniha moudrosti, sborník aforismů a sentencí peadagogických, Bursík a Kohout, 1892, 141, česky]