How does the author convey theme?
writing technique:
questions:

There are quite a few techniques...
Because you haven't specified the question, I will state all the techniques possible...
Alienation – The effects of, the loneliness of, to cure it.
Ambition – getting what you want, stunted by, thwarted.
Betrayal – the pain of, in love and friendship.
Coming of age  – loss of innocence.
Courage – courage to deal with conflict, lack of, developing, conquering with.
Deception  – how to deceive, results of.
Discovery – what does it take to discover new places, inner meaning, strength, even treasure.
Escape – from life, routine, prison, family pressures.
Death – how to escape, facing, what happens after, consequences of.
Fear – driven by, dealing with, conquering.
Freedom – loss of, gaining, handling, fight for.
Good versus evil – survival of one despite the other, triumph of one over the other.
Isolation – physical and emotional.
Jealousy – trouble caused by, denial of, driven by.
Justice – the fight for, injustice, truth versus justice.
Loss – of life, innocence, love, friends, to avoid.
Loneliness – no man is an island, or hell is other people.
Love – love fades, is blind, can overcome all obstacles, can
Lust – for power, for sex.
Power – the search for, the loss of, what we are willing to exchange for.
Prejudice – racism, bigotry, snobbery, dealing with.
Security – the loss of, the finding of the need for, how we act when security is shattered.
Spirituality and God – the struggle to find faith, live without faith etc.
Survival – man versus nature