The brain is the place where you think.
How does the brain get things to think about? first, blink your eyes now pinch your ears, put out your tongue.
Sniff whith your nose wiggle your fingers and rub the skin on your arm.
It is the eyes,ears,tongue,nose,fingers and skin that give your brain things to the brain. the ears send sound message to the brain. the nose sends message of smell. the tongue sends message of test_whether things are sweet or sour For example: the fingers and skin send message about the feel of things _whether they are hot or cold, rough or smooth, round or squrare. all these message are sent to the brain over hevers.
And this is the way the brain gets things to think about.