You can’t have a new idea ’til you’ve got rid of an old one.

As the economist J.M. Keynes said: “The difficulty lies not so much in developing new ideas, as in escaping from the old ones.

Ideas won't keep. Something must be done about them.

The difficulty lies not so much in developing new ideas as in escaping the old ones.

If you want a new idea, read an old book. — attributed to Ivan Pavlov (among others)

Without new ideas success can become stale.

If you want something new, you have to stop doing something old

There is no such thing as a new idea. It is impossible. We simply take a lot of old ideas and put them into a sort of mental kaleidoscope. We give them a turn and they make new and curious combinations. We keep on turning and making new combinations indefinitely; but they are the same old pieces of colored glass that have been in use through all the ages.

You can't have good ideas unless you have lots of ideas.

I can't understand why people are frightened of new ideas. I'm frightened of the old ones.

You can’t crush ideas by suppressing them. You can only crush them by ignoring them. By refusing to think, refusing to change.

We all are learning, modifying, or destroying ideas all the time. Rapid destruction of your ideas when the time is right is one of the most valuable qualities you can acquire. You must force yourself to consider arguments on the other side.

If you want a new idea, read an old book.

New ideas are created when they can be discussed freely, but if there is a CORRECT view then you cease to have new ideas