"conservation of thought-energy.

In physics you have the term 'power of orientation'. Thought the mass of energy is there, the current will not flow. It must be connected to the magnet and then the electric current will flow through the power of orientation. Even so, the mental energy which is dissipated and misdirected in various worthless worldly thoughts should be well directed in proper spiritual channels."

Swami Sivananda ---Thought Power 

Paulが言っていたのはこれ。