Men’s I Don’t Want to Believe, I Want to Know T-Shirt

Faith asks you to believe. Science demands that you know. This I Don’t Want to Believe, I Want to Know design captures Carl Sagan’s unwavering devotion to evidence over superstition. Printed on a premium cotton tee, it’s a bold statement for skeptics, freethinkers, and science enthusiasts.

Why You’ll Love It

• Sagan-Inspired: Quote drawn from Carl Sagan’s legendary advocacy for science.

• Premium Comfort: Soft, durable cotton for everyday wear.

• Bold Design: Clean typography with a powerful message.

• Conversation Starter: Sparks dialogue about evidence, reason, and truth.

Wear the Words of Reason

Belief fades — knowledge lasts. This shirt honors Sagan’s call to replace faith with evidence.

• 100% ring-spun cotton
• Sport Grey is 90% ring-spun cotton, 10% polyester
• Dark Heather is 65% polyester, 35% cotton
• 4.5 oz/yd² (153 g/m²)
• Shoulder-to-shoulder taping
• Quarter-turned to avoid crease down the center
• Blank product sourced from Bangladesh, Nicaragua, Honduras, Dominican Republic, Haiti or Guatemala

Disclaimer: Due to the fabric properties, the White color variant may appear off-white rather than bright white.

This product is made especially for you as soon as you place an order, which is why it takes us a bit longer to deliver it to you. Making products on demand instead of in bulk helps reduce overproduction, so thank you for making thoughtful purchasing decisions!