I totally agree with this statement!

Perspective certainly colors our experience of others and the world! That said, the "sentence" ought to be two sentences, since it consists of two independent clauses (subject + verb). Also, in American English, quotes surround the final punctuation.

It should read, "We don't see things as they are; we see them as we are."

Of course the way we are influences how we see things, but there has to be stimuli in the first place for us to perceive them, and surely their being influences how we perceive them. There can’t be a dog that I perceive as a cat and you perceive as a rat. Worse yet, I can’t perceive a cat and you perceive a rat when there isn’t anything. This seems more like epistemic nihilism than constructivism.

That is easy to say "it's the basis of constructivist"... 😊 However can you make any examples of this? 

I agree. That is the basis of constructivism, isn't it?