Let me tell you the secret that has led me to my goal. My strength lies solely in my tenacity.

In the fields of observation, chance favors only the prepared mind.

Rule No. 1: Never lose money. Rule No. 2: Never forget Rule No. 1.

-- Warren Buffett

An expert is a man who has made all the mistakes which can be made, in a narrow field.

-- Niels Bohr

A new scientific truth does not triumph by convincing its opponents, but rather because its opponents eventually die and a new generation grows up familiar with it.

-- Max Planck

Finally we shall place the Sun himself at the center of the Universe.

-- Nicolaus Copernicus

The present is theirs; the future, for which I really worked, is mine.

-- Nikola Tesla

Mathematics is the alphabet in which God has written the universe.

-- Galileo Galilei