E:

Albert Einstein:

• If A equals success, then the formula is A equals X plus Y plus Z. X is work. Y is play. Z is keep your mouth shut.
• Anger dwells only in the bosom of fools.
• The tragedy of life is what dies inside a man while he lives.
• When you are courting a nice girl an hour seems like a second. When you sit on a red-hot cinder a second seems like an hour. That's relativity.
• It has become appallingly clear that technology has surpassed man's humanity.
• The most beautiful thing we can experience is the mysterious, it is the source of all true art and science.
• I am enough of an artist to draw freely upon my imagination. Imagination is more important than knowledge. Knowledge is limited. Imagination encircles the world.
• In the middle of difficulty lies opportunity.
• We believe that an informed citizenry will act for life and not for death.
• I know not with what weapons World War III will be fought, but World War IV will be fought with sticks & stones.
• The significant problems we face cannot be solved at the same level of thinking we were at when we created them.
• Problems cannot be solved at the same level of awareness that created them.
• If we knew what it was we were doing, it would not be called research, would it?
• Weakness of attitude becomes weakness of character.
• Everything should be made as simple as possible, but not simpler.
• I never think of the future. It comes soon enough.
• The important thing is not to stop questioning.
• If I would be a young man again and had to decide how to make my living,
  I would not try to become a scientist or a scholar or teacher.
  I would rather choose to be a plumber or a peddler in the hope to find that
  modest degree of independence still available under present circumstances.
• As a human being, one has been endowed with just enough intelligence to be
  able to see clearly how utterly inadequate that intelligence is when confronted
  with what exists.
• The unleashed power of the atom has changed everything save our modes of thinking
  and we thus drift toward unparalleled catastrophe.
• Not everything that can be counted counts, and not everything that counts can be
  counted.
• Only two things are infinite, the universe and human stupidity, and I'm not sure about
  the former.
• Only a life lived for others is worth living.
• God does not play dice with the universe.
• Few are those who see with their own eyes and feel with their own hearts.
• In the middle of difficulty lies opportunity.
• The important thing is to not stop questioning. Curiosity has its own reason for existing.
• I am not only a pacifist but a militant pacifist. I am willing to fight for peace.
  Nothing will end war unless the people themselves refuse to go to war.
• Any intelligent fool can make things bigger, more complex, and more violent.
  It takes a touch of genius and a lot of courage to move in the opposite direction.
• Grabitation is not responsible for people falling in love.
• The eternal mystery of the world is its comprehensibility.
• Sometimes one pays most for the things one gets for nothing.
• Anyone who has never made a mistake has never tried anything new.