Science, Bitch. 

And of course all the science , the chemistry . The solution to every problem Walter White faces is somehow solved by science. If only they taught us chemistry like this in school. We'd all be graduating with honours in chemistry.                                            Science is used for all sorts of fun things – like building homemade batteries or creating poison out of beans, or using mercury fulminate to make a meth look-alike that’s actually a highly explosive material you can use to intimidate a psychotic drug dealer Like Jesse says,   "Science, Bitch".