These are the most frequently used words in this book.
almost
always
animals
another
answer
anything
behaviour
beings
believe
brain
came
child
children
come
con
conscious
consciousness
darwin
different
does
down
dreams
even
ever
evidence
example
experience
eye
fact
far
feel
feeling
few
first
get
go
going
gorillas
great
happen
himself
human
indeed
ing
inner
kind
know
less
let
life
little
lives
man
may
mean
might
mind
must
natural
nature
new
nothing
now
ourselves
own
people
perhaps
person
personal
play
problems
question
quite
real
say
see
seems
self
sense
should
simply
social
society
something
sometimes
state
still
story
take
things
think
thought
time
two
understanding
without
work
world
years
yet