Celebrate Critical Thinking

Save the date

May 28, 585 BC is the day most commonly associated with the beginning of rational inquiry into nature. Therefore it is also relevant that we celebrate it just like we celebrate other important cultural landmarks with reference to the stories told about their origin, such as Christmas.

Speak up

If you have an idea on how to promote Thales Day we would love to hear from you. Let your creative juices run free and together we can develop the event further. Especially we are interested in hearing from people who might like to stage a Thales Day event in their city. Your corporation is essential to making Thales Day a beloved international event that can help strengthen societies ties to the tradition of philosophy and science.

Our greatest gift of nature

is the ability to reason and make sound judgements about ourselves and the world around us.

”Today, more than ever, when popularists are appealing to our baser emotions with distorted pictures of reality, we need to celebrate the ideals of science and philosophy and protect the free exchange of ideas in a calm and civil fashion. I welcome Thales Day as an occasion for remembering the importance of these ideas.”
Peter Singer
“I applaud your endeavor to establish Thales Day on the calendar at a time when language is used more often for propaganda than as a medium for the pursuit of truth. Stories, ritual, and celebrations are a way of communicating knowing and of sharing a common culture just as the sacrament of touch communicates love in a different way than words. However, Mythos is a story that bounds our knowledge and is haunted by its temptation to believe it to be objective fact; this belief enables the powerful to control and exploit a neighbor. Logos knowledge is derived from the process of dialogue with Nature, with Mythos, and with Adversary. Dialogue has no bounds; it allows continued testing and modification of belief in our quest for the discovery of truth and of reconciliation with all people.
John B. Goodenough


Simply send us an email or give us a call and we will deliver to you at lowest possible shipping rate. Money from sales goes to funding the event, and you can write or call for full disclosure - no hidden variables.

We are proud to have teamed up with highly esteemed animator Ib Kjeldsmark to offer you the first ever commercially available drawing of the famous story of Thales who fell into a well while watching the stars.

According to Plato a beautiful slave girl laughed at Thales and said, "You are so occupied with what is going on in the sky that you cannot see what is at your feet." Can you spot her in Kjeldsmark's original design?

The story of Thales falling into a well went full circle when seemingly retold in a famous quote by the most famous scientist of the 21st century, Steven Hawking. He reminds us to, "Look up at the stars and not down at your feet. Try to make sense of what you see, and wonder about what makes the universe exist. Be curious."

The Thales Day logo was created by the brilliant graphical designer Mikael Hansen. It depicts the Eclipse of Thales and we think it fits really well on closing so that you can promote critical thinking and look sophisticated and stylish at the same time. What is remarkable about the Eclipse of Thales is not only that it puts a workable date on the beginning of the tradition of philosophy and science, but that both then and now predicting a total solar eclipse is likely the greatest symbol of the triumph of the kind of thinking that began with Thales and his contemporaries in ancient Greece.

Thales Day T-shirt

$40.00 / DKK 250

White T-shirt with illustration on front

  • 100% Extra soft ring-spun cotton
  • Choose between men's and women's T-shirts

Thales Day Mug

$16.00 / DKK 100

White ceramic mug

  • Illustration on front
  • Text on back

Thales Day Postcard

$4.00 / DKK 25

For passing along messages.

  • Stamps not included

Thales Day Logo T-shirt Men's

$40.00 / DKK 250

Men's model Black T-shirt with the Thales Day Logo

  • 100% Extra Soft Ring-spun Cotton

Thales Day Logo T-shirt Women's

$40.00 / DKK 250

Women's model Black T-shirt with the Thales Day Logo

  • 100% Extra Soft Ring-spun Cotton

Thales Day Logo Sweatshirt

$80.00 / DKK 500

Black sweatshirt with the Thales Day logo

  • 50% cotton
  • 50% polyester