Abraham Lincoln

The price of diamonds can vary greatly depending on size, cut, color, and other factors, including whether they have a history. But because of the rarity of blue boron diamonds, they often fetch more money than gems of similar quality.

Just as an athlete with natural gifts may fail to develop the fundamental skills necessary to play their sport after their talent fades, so people naturally disposed to faith may fail to develop the skills necessary to sustain them for a lifetime.