Think and do. Do and think. That's the sum of wisdom.

What it means

The speaker adds that the two must alternate like breathing in and out. Thought without action goes stale, action without thought goes wild. Keep both going.

The source

"Think and do. Do and think. That's the sum of wisdom." Goethe said it in Wilhelm Meister's Journeyman Years 2.9. Translated from the original German by Spartan Surfers.

"Denken und Tun, Tun und Denken, das ist die Summe aller Weisheit"

Original German, Wilhelm Meister's Journeyman Years 2.9. Text read at gutenberg.org.

Who said it

Goethe (1749–1832). German poet, novelist, scientist and statesman, author of Faust. He believed knowing is worthless until it becomes doing.

Questions

What does "Think and do. Do and think. That's the sum of wisdom." mean?

The speaker adds that the two must alternate like breathing in and out. Thought without action goes stale, action without thought goes wild. Keep both going.

Who said "Think and do. Do and think. That's the sum of wisdom."?

Goethe (1749–1832). Source: Wilhelm Meister's Journeyman Years 2.9.

What is the original German?

Denken und Tun, Tun und Denken, das ist die Summe aller Weisheit. Translated from the original German by Spartan Surfers.

Is "Think and do. Do and think. That's the sum of wisdom." on a shirt?

Yes. We print it to order on our tees in 7 illustrated looks, from $44, with free US shipping.

"Think and do. Do and think. That's the sum of wisdom." (Goethe, Wilhelm Meister's Journeyman Years 2.9, translated by Spartan Surfers). https://spartansurfers.com/quotes/think-and-do-do-and-think-thats-the