Wien bridge oscillator circuit doesn't work
You are using your op amp in a single-supply configuration without providing a virtual ground. The simplest fix is to get another 14 volt supply, and connect this as a negative supply to pin 4. If you're not willing to do this, try





Your output will now have an offset of about 7 volts, which may or may not be a problem, especially since any noise on the 14 volt line will (except for the filtering provided by C1) show up on the output as well. This is why I say it's easier to provide a second power supply. YMMV, of course.

Also, make sure to provide a 0.1 uF ceramic cap between V+ and ground for each op amp. Connect the cap right next to the pins of each IC - don't use jumpers.