Lennie if you get in truble like you always done before, I want you to come right here and hide in the brush.
Sure I can remember that.
Both ends the same.
No sir, I ain't gonna talk to you or nothing.
I never get to talk to nobody. I get awful lonley.
George is telling Lening that if he gets in trouble like he did in Weed he has to come and hide in the brush and wait for him to come. This scene is foreshadowing that Lennie will get in trouble and have to remember to hide in the brush. This shows that it's good to have a plan just in case something goes wrong.
Lennie is looking at a face card and notices that both the sides are the same. This moment is soon afterward Candy's dog is shot. This is an inference to how the end of the dog's life is the same as the end of Lennies life. Therefore, sometimes it's better to put things out of their misery rather watching them suffer.
Curley's wife convinces Lennie to talk to her because she's never allowed to talk to anyone. However, Lennie isn't allowed to talk to her. This is foreshadowing that something bad is going to happen to her. Lennie ended up snapping her neck because he was so scared. This proves people will do crazy things they don't mean when their scared.
In this scene a heron is killing a water snake. Meanwhile, George is killing Lennie. This is very symbolic and the reader can compare these two situations. A snake represents evil, so the heron is killing evil. In some ways Lennie can be evil. So, George is killing "evil." This scene proves that good kills evil in nature and in life.