Prejudices are what fools use for reason.

Whether or not Voltaire said it, the message is accurate: prejudice masquerades as logic when people mistake assumptions for truth. Real reasoning requires evidence, curiosity, and humility—qualities fools lack.

Prejudice is lazy thinking—it fills the gaps where understanding should be. The more certain someone is without proof, the less they’ve likely examined their own beliefs.

Prejudices often come from a place of ignorance, fear, or tradition, and they prevent us from engaging with the world in an open, thoughtful way. They simplify complex issues into binary categories (us vs. them, good vs. bad) without seeking deeper understanding. Voltaire’s critique challenges us to move beyond superficial judgments and to think critically. True reason, for him, is about questioning assumptions, seeking evidence, and engaging in thoughtful, open-minded discourse.

In the context of modern life, this quote still holds immense value. It asks us to examine our own beliefs and biases—whether they are about people, ideas, or systems—and to consider whether they are rooted in fact and reason, or whether they are simply the result of prejudice.

What prejudices have you carried without questioning? And how can you engage more deeply with the world by seeking understanding, rather than relying on assumptions?

True wisdom comes not from accepting things as they are, but from challenging our biases and seeing the world through a lens of reason and compassion.