"He who desires, but acts not, breeds pestilence"

This quote by William Blake is a pointer that inaction can have serious effects. It recommends that when we have a desire or goal, we should take action in order to make it a truth. If we do not act, we will not attain our goals and our inaction can cause unfavorable results. In this case, Blake is recommending that inactiveness can lead to plague, or an infectious and lethal disease. This quote is a cautioning to act and not let our desires remain unfulfilled. It is a tip that we must act in order to achieve our objectives and that inaction can cause severe consequences.