The mind, once stretched by a new idea, never regains its original dimensions.
— Oliver Wendell Holmes Jr.

A mind that has been stretched will never return to it's original dimension.
Albert Einstein original quote

It is better to live your own destiny imperfectly than to live an imitation of somebody else's life with perfection.
— Bhagavad Gita

The more powerful and original a mind, the more it will incline towards the religion of solitude.
— Aldous Huxley

The masses have no habit of self reliance or original action.
— Ralph Waldo Emerson