Famous quotes containing the words key and/or exchange:
“Every revolution was first a thought in one man’s mind, and when the same thought occurs in another man, it is the key to that era.”
—Ralph Waldo Emerson (1803–1882)
“Love is often nothing but a favorable exchange between two people who get the most of what they can expect, considering their value on the personality market.”
—Erich Fromm (1900–1980)