Learning without thinking is useless. Thinking without learning is dangerous.

Learning without thought is labour lost; thought without learning is perilous.

He who learns but does not think, is lost! He who thinks but does not learn is in great danger

He who learns but does not think is lost. He who thinks but does not learn is in great danger.

Aprender sin pensar es inútil. Pensar sin aprender peligroso

The Master said, “Learning without thought is labor lost; thought without learning is perilous.” The Master said, “The study of strange doctrines is injurious indeed!” The Master said, “Yu, shall I teach you what knowledge is? When you know a thing, to hold that you know it; and when you do not know a thing, to allow that you do not know it;-this is knowledge.

He who studies but does not think is lost; he who thinks but does not study is dangerous.

Learning without doing is wasted. If I don’t use what I learn, then it was pointless! How horrible to waste those hundreds of hours I spent learning, and not turn it into action.

The highest quality of thinking cannot emerge without learning. Learning can’t happen without mistakes.

Lernen und nicht denken ist nichtig, denken und nicht lernen ist ermüdend.

Much learning does not produce thought.

A little Learning is a dangerous Thing.

Thinking is good, but excessive thinking is not. Between thoughts if there is a period of thoughtlessness, thoughts will be fresh and pathbreaking. A thinker will be able to cultivate a strain of healthy thoughts only when he pays attention to thoughtlessness also.

At the end of the day, thinking by itself is useless without action.