Practicing What You Preach
It’s not uncommon to see companies or individuals preaching one thing while doing the opposite, which is disheartening. Thankfully, some companies genuinely follow their own advice. To see a perfect example of this principle in action, look no further than the image below.

Eskom, a South African public utility company, rented advertising space to encourage the public to use electricity responsibly. During nighttime hours, they illuminate only the text, effectively using only the necessary amount of electricity. Despite leaving over half of the billboard space unused, Eskom demonstrates a wise and conscientious approach to energy consumption.