Man's mind, once stretched by a new idea, never regains its original dimensions.

The greatest thing in this world is not so much where we are, but in which direction we are moving.

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

Every now and then a man's mind is stretched by a new idea or sensation, and never shrinks back to its former dimensions.

Many ideas grow better when transplanted into another mind than in the one where they sprung up.

Man's mind, once stretched by a new idea, never regains its original dimensions.