Boice's light bulb illustration

In his commentary on Romans 10:3, James Boice uses the following illustration to describe how Paul came to his own righteousness in comparison to the righteousness of Christ (p. 1160):

I have sometimes said it was as if Paul had been considering himself a 100-watt light bulb, surrounded by people who were only 75-, 60-, and 25-watt light bulbs. But, when, Jesus appeared to him, the righteousness of Jesus was like the brightness of the sun. When Paul realized that, he gave up trying to create his own righteousness and instead placed his faith in Jesus, which was the only sensible thing to do.

JTR