Thinking is the greatest pleasure of mankind. ——Brecht

True knowledge and insights first come from thinking and doubting. ——Rockwell

Spending time on thinking is the most time-saving thing. ——Cousins ??

Thinking is the self-talk of the soul. ——Plato

Those who are not determined to cultivate the habit of thinking will lose the greatest joy in life. ——Edison

The development of the thinking world, in a sense, is the continuous getting rid of surprise. ——Einstein

Doubts grow with knowledge. ——Goethe

Greatness is not only earth-shattering in his career, he is always thoughtful and silent. ——Krylov

It is embarrassing to fight against one's own heart, but this kind of victory marks a thoughtful person.

——Democritus

In artistic creation, the first idea is the best; in other things, repeated thinking results in the best.

—— Blake

One should believe that what one does not understand can always be understood, otherwise he will not think about it anymore. ——Goethe Those who are not determined to cultivate the habit of thinking will lose the greatest joy in life.

——Edison