The first one is an "idiom" / or, "idiomatic expression" ; that is: [to have] "tricks up [one's sleeve's]" .
The second one is "hyperbole" (gross exaggeration).
The third one is "personification" — but also "hyperbole" (gross exaggeration).
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Answer: passive voice
there is no doer of the action and hope it is correct
It might be stated that Mill employed a combination of formal and informal tone in "On liberty..", by developing some complex ideas, meanings and expressions. The author used metaphors and figurative languages to appeal to the audience. It might be added that Mill wrote those who agreed with him and he discussed his thesis by attacking the conservatives.
He used frases such as <span> "no one's idea," "no one should assert," "it would be absurd," "nobody denies" . </span>
Answer:
according to the author this means that a new generation has more technology and can get help more quickly knowing that technology like for example domestic robots, have become a big science nowadays.