"The ruling ideas of each age have ever been the ideas of its ruling class."
"Age is an issue of mind over matter. If you don't mind, it doesn't matter."Karl Marx on Mark Twain
"Anyone who stops learning is old, whether at twenty or eighty. Anyone who keeps learning stays young. The greatest thing in life is to keep your mind young."Karl Marx on Henry Ford
"Wrinkles should merely indicate where smiles have been."Karl Marx on Mark Twain
"True terror is to wake up one morning and discover that your high school class is running the country."Karl Marx on Kurt Vonnegut
"A diplomat is a man who always remembers a woman's birthday but never remembers her age."Karl Marx on Robert Frost
"Art is always and everywhere the secret confession, and at the same time the immortal movement of its time."
"It is absolutely impossible to transcend the laws of nature. What can change in historically different circumstances is only the form in which these laws expose themselves."
"Experience praises the most happy the one who made the most people happy."
"Necessity is blind until it becomes conscious. Freedom is the consciousness of necessity."
"The country that is more developed industrially only shows, to the less developed, the image of its own future."