Let us see to it that our hearts and minds are tuned to the higher vibrations, so that only those things that are good, pure, holy and of good report can enter and dwell there. Let us keep out the idle thoughts, the unkind thoughts, the envious thoughts that come knocking at the door of the heart and which, if we admit them, will result in speech and action, and produce in our bodies illness, weakness, weariness. Then when this happens, man in his ignorance of the true cause goes to the doctor or surgeon who perhaps performs an operation, and often the patient may be no better but rather worse, for the real cause of the trouble is untouched.