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Scientists tell us that parental love is one of the most powerful forces in nature.

Across the animal kingdom, parents invest enormous amounts of time and energy caring for their offspring. Birds feed chicks that never seem to stop eating. Elephants protect their calves for years. Even the smallest mammals instinctively nurture their young.

But humans may be the most devoted parents of all. Unlike most animals, our children require support for many years before they become fully independent. As a result, parents willingly make sacrifices that often defy logic.

A father who refuses to spend P1,000 on himself somehow finds even a higher amount for a school project. A mother who delays replacing her aging phone has no hesitation paying for tuition, uniforms and tutorial classes.