Each ray of light moves in the coordinate system 'at rest' with the definite, constant velocity V independent of whether this ray of light is emitted by a body at rest or a body in motion.

Student: Dr. Einstein, Aren't these the same questions as last year's [physics] final exam? Dr. Einstein: Yes; But this year the answers are different.

Do not worry about your difficulties in Mathematics. I can assure you mine are still greater.

[Mystery] is the fundamental emotion that stands at the cradle of true art and true science.

You have to color outside the lines once in a while if you want to make your life a masterpiece.

Everything what's inspiring has been created by one who could work in freedom

The world we have created is a product of our thinking; it cannot be changed without changing our thinking. If we want to change the world we have to change our thinking...no problem can be solved from the same consciousness that created it. We must learn to see the world anew.