I've always had a thing for analogies, parables, and the like. As teaching tools, they use every-day situations and ideas to explain complex principles, making those complex ideas a whole lot easier to understand. Often, they can explain ideas that would otherwise be nigh impossible to explain accurately.
Jesus Himself used
parables all the time in His teaching. Sometimes this was to make the
teaching of a certain principle easier. But often He didn't give an
explanation. He simply allowed people to take from the "nice story" what
they would- an act of mercy, given that we are each held accountable
for following the doctrines we understand.
The first in this series was about ducks. The second one was about medicine.. and salvation. The third was about math class. The fourth was about engines and society. The fifth was about dirt. Number six was about my grandma's puzzles.
There once was a man who traveled for work, coming home each Friday evening. One weekend, a storm rolled in along with the man. Because of the storm, he was later than usual and particularly eager to get home. In his hurry, he hadn't kept track of the fuel gauge on his car and ran out of gas just a couple miles from the station near his home.
Taking advantage of the occasional lightning, he would run as far as he dared, and then he would slow and stumble in the dark, waiting for the next flash of light. It took much of the night to get to the gas station.
He finally got there, filled his gas can, and paid the attendant. As he was about to leave, the attendant handed the man a flashlight. While nowhere near as bright as the lightning, the flashlight gave constant light and the man was back to his car soon.
Like the lighting, the "light of Christ" is given and available to all mankind. It's not constant, not consistent. Its light is only occasional, lighting for just short times. On the other hand, the gift of the Holy Ghost may not be flashy and blindingly brilliant, but it's constant. So long as we keep ourselves worthy, this light will be our constant guide, making progress easier and faster.