To access variables inside a blade when you're returning the view you need to pass an additional associative array argument. For example:

return view('master', ['article' => $article]);

This will allow you to access whatever information you're retrieving from the database or what have you. This can be done in your routes although I don't recommend it. Using a controller is your best bet.

I know that, but this is a master.blade.php, so I am not returning any view on a route. It's just used for templating purposes.

http://laravel.com/docs/5.1/views#sharing-data-with-all-views

You can call variable directly from your view file .. example:

@foreach(\App\Product::get() as $product)
         <li><a href="{{ url('product/')}}{{$product->id}}">{{ $product->title }}</a></li>
@endforeach

This mean you'll call the variable directly from your Model ( Product ).