LIGHT

Making decisions in the dark can lead to some regrettable consequences. Back in the days before electricity, a tightfisted old farmer was taking his hired man to task for carrying a lighted lantern when he went to call on his best girl. "Why," he exclaimed, "when I went a-courtin' I never carried one of them things. I always went in the dark." "Yes," the hired man said wryly," and look what you got!" 

Source Unknown.

Some people change their ways when they see the light, others only when they feel the heat.

Source Unknown.