Famous quotes of living people?

Ein Buch in 7 Minuten

Active Member
Joined
May 5, 2017
Messages
30
Reaction score
7
Age
33
Is it allowed to use famous quotes in a video without permission?
I saw this recently in some videos.

Is this allowed or is just the chance of getting caught very low (considering that the video title and topic itself doesnt refer to the autor of the quote)?