And beyond what has been said, experience, which is the mother of all things, undeceives us and removes all our doubts.
E alem do que dito he, ha experiencia, que he madre das cousas, nos desengana e de toda duuida nos tira.
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Source, in full
Experiment is the mother of realities, removes our errors and solves our doubts [and by the same method of experiment] we are able to protect ourselves against the delusions and fables that some ancient cosmographers have left us in writing.
Notes from Wikiquote
As quoted in Robertson The Hispanic American historical review, Vol 16 (1936), p. 325 | Cf. Esmeraldo de Situ Orbis, Book IV, ch. I, p. 152: Craramente se mostra ser falso o que escrevêram; poys debaixo da mesma equinocial há tanta habitaçam de jente, quanto teemos sabida e praticada; e como quer que a experiencia he madre das cousas, por ella soubemos rradicalmente a verdade.
Variants
, as quoted in Welch Europe's discovery of South Africa (1937), p. 95