I have a 2001 toyota corolla. The brake lights do not work, i changed the fuse & the brake switch. The lights still don't work, what else could it be?

Have you checked the switch for power? get a cheap test light and you should have power on one side of the switch all times.If you dont it will be a supply fault eg fuse, fusable link. does every thing else work,intieror lights, clock, haz, horn. if you have power on it check other side of switch when pressing brake padal, if so ceck for power at lamps with pedal pressed. if so check for correct type lamp or an eath problem. see how you go...