You make observations, write theories to fit them, try experiments to disprove the theories and, if you can't, you've got something.

If God had wanted us to vote, he would have given us candidates.

"Darth vader" is derived from old dutch, meaning "Dark father"

"Drawing is based upon perspective, which is nothing else than a thorough knowledge of the function of the eye."

"For millions of years, mankind lived just like the animals. Then something happened which unleashed the power of our imagination. We learned to talk and we learned to listen."

"Geometry has two great treasures; one is the Theorem of Pythagoras; the other, the division of a line into extreme and mean ratio. The first we may compare to a measure of gold; the second we may name a precious jewel."

"Good culture is born of a good disposition; and since the cause is more to be praised than the effect, I will rather praise a good disposition without culture, than good culture without the disposition."