What I leant during my last photography lesson with Master Lee?

we knew that:
Photography is all about light, and properly exposing an image has to do with letting just the right amount of light into the camera.

So..
What is an Aperture?
* The wider the aperture opening, the more light will enter the camera.
* The smaller the aperture opening, the less light will enter the camera.

What is shutter speed?
* The slower the shutter speed, the more light will enter the camera.
* The faster the shutter speed, the less light will enter the camera.

What is ISO?
* The higher the ISO setting, the more sensitive your camera will be to light.
* The lower the ISO setting, the less sensitive your camera will be to light.

Am I right, Master Lee?