“Je ne doute point d'apprendre”

Question

En français dans le texte, from Shakespeare's Henry V Act 3 Scene 4:

Katherine — Je ne doute point d'apprendre [...] et en peu de temps.

Meaning “I have no doubt learned et in a short time”.

What grammatical purpose does “point de” serve in this sentence?

Answer 1

"Je ne doute point" is another way of saying "je ne doute pas". It is a negative, it is very formal and sounds old fashioned nowadays but might have been standard French is the 16th century.