"The significant problems we face today cannot be solved at the same level of thinking we were at when we created them."

- Albert Einstein

"Let a man radically alter his thoughts, and he will be astonished at the rapid transformation it will effect in the material conditions of his life."

- James Allen

"Where leadership is concerned, people are not measured in inches, or pounds, or college degrees, or family background; they are measured by the size of their thinking."

- David Schwartz

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

- John Maynard Keynes

"More gold has been mined from the thoughts of man than has ever been taken from the earth."

- Napoleon Hill