A good idea is never lost. Even though its originator or possessor may die, it will someday be reborn in the mind of another.

Over the years I have discovered that ideas come through an intense desire for them; continually desiring, the mind becomes a watch-tower on the lookout for incidents that may excite the imagination - music, a sunset, may give image to an idea.

All good thoughts and ideas mean nothing without action.

It should not be hard for you to stop sometimes and look into the stains of walls, or ashes of a fire, or clouds, or mud or like places, in which...you may find really marvellous ideas.

All there is to writing is having ideas. To learn to write is to learn to have ideas.

You ask me if I keep a notebook to record my great ideas. I've only ever had one.