A mind that is stretched by a new experience can never go back to its old dimensions.

The mind, once expanded to the dimensions of bigger ideas, never returns to its original size.

A moment's insight is sometimes worth a life's experience.

A mind that is stretched by a new experience can never go back to its old dimensions.

The longing for certainty... is in every human mind. But certainty is generally illusion.

The mind of a bigot is like the pupil of the eye. The more light you shine on it, the more it will contract.