certitudo − dubito
descartes, in his own language
c3e5r17t19i9t19u20d4o14=110−d4u20b2i9t19o14=68
certitudo − dubito = 110 − 68 = 42
c3a1r17t19e5s18i9u20s18=110−d4u20b2i9t19o14=68
Cartesius − dubito = 110 − 68 = 42
m12a1l11i9g7n13u20s18=91−d4a1e5m12o14n13=49
malignus − daemon = 91 − 49 = 42
Descartes wrote the Meditations in Latin, which had 23 letters: no J, no U, no W. Number them a=1 to z=23.
CERTITUDO, certainty, minus DUBITO, I doubt, is 42. CARTESIUS, his own Latin name, minus DUBITO is 42. MALIGNUS minus DAEMON, the malicious demon, is 42.
Rule: Classical Latin, 23 letters (i=j, v=u), a=1 … z=23.
type a word
a=1 … z=26, letters only. If it comes to 42, 91 or 133 the page will say so.