The Illusion of
Perception
The illusion of the grey squares is an illusion of perception. The
squares are exactly the same shade of grey, but due to the context
in which you see them, the square marked A seems to be much
darker than the square marked B.
Another example of this illusion is a scarecrow. If a farmer sets
up a scarecrow in the middle of a field, birds and wild animals
stay away, because when a man is in the field they are afraid to
approach. They perceive the scarecrow as a real man. If they were
to approach closer and check it out, they would not be afraid of
it.
The Illusion of Thought
The illusion of thought is like illusions created by magicians. By
making you pay attention to some details and not to others, a
magician can make you believe that he can read your mind to know
which card you have chosen, etc. It is also very convincing, even
though one knows that it is just an illusion.
Another example is the various kind of scams that con-merchants use
to prey on innocent people. If one does not know about such scams,
it is very easy to be fooled by them. If one knows about a
particular scam, one can see through it at once. Take pyramid
selling for example. Anyone who understands the mathematics behind
pyramid selling will not be taken in by any such scam. Those who
participate in such pyramid selling scams are either dishonest or
very naïve.

Look at the diagrams:
The bottom one was created by simply copying the top shapes to the
bottom. Nothing was resized, just the position was changed. Where
did the white space come from? Count the grid cells, they are all
the same size, and are not distorted in any way. I was baffled when
I first saw this puzzle. Now that I know how it works, I am no
longer deceived by it.
The Illusion of View
The illusion of view is like the case of a man lost in the desert,
where there are few distinguishing landmarks. A man may become
disoriented and believe that he is travelling north towards safety,
when, in fact, he is travelling south, deeper into the desert. The
harder he tries, the farther astray he goes. How pitiful his plight
is!
Nearly everyone in the world is living under the spell of the
illusion of view. They think they are right, but they are wrong.
They are busy working for aims that are empty and futile. Because
they have insufficient knowledge of the Dhamma, they do not know
what to strive for, nor how to strive. What they perceive as
happiness, the wise perceive as suffering. What they perceive as
suffering, the wise perceive as happiness.
Just look how hard people struggle to get a new car. They work
overtime, cut down on other spending. Then they have to pay for
insurance, road tax, petrol, maintenance, parking fines, congestion
charging, etc. They use a new car for ten or fifteen years, then
they have to struggle again to take it to the rubbish tip. If only
they had struggled to remove their desire in the first place.
It is easy to be wise with hindsight, but illusions and wrong views
are a serious problem. It is due to such illusions that people have
to suffer so much. When their loved ones die, or things do not work
out as they planned, people have their illusions shattered, and
have to suffer terribly. It is not easy to see things as they
really are.
All suffering has its root in illusion. The Buddha taught that
craving is the cause of suffering, which is right of course, but it
is the proximate cause, not the root cause. Why do we get attached
to things, to people, and to views? The root cause is ignorance
,which includes illusion ,delusion, wrong view , conceit and
personality view .
It is vital to understand how illusion, delusion, and wrong views
arise. Not even trying to understand means the darkest ignorance.
It is not that you do not know what the Buddha taught you know
very well what you should do but you do not want to know, so you
ignore what he said, and just continue your life as usual. That is
what ignorance is a kind of bury your head in the sand
mentality. It doesnt mean just a lack of knowledge. One may have
heaps of knowledge, but without insight and wisdom one remains
ignorant.