Mathematicians do not study objects, but relations between objects. Thus, they are free to replace some objects by others so long as the relations remain unchanged.
-Henri Poincare-
Education is the most powerful weapon which you can use to change the world.
-Nelson Mandela-
Mathematical discoveries, small or great are never born of spontaneous generation They always presuppose a soil seeded with preliminary knowledge and well prepared by labor, both conscious and subconscious.
-Henri Poincare-
Do not worry about your difficulties in mathematics, I assure you that mine are greater.
-Albert Einstein-