A house divided against itself cannot stand. I believe this government cannot endure, permanently half slave and half free.

With malice toward none, with charity for all, with firmness in the right as God gives us to see the right, let us strive on to finish the work we are in.

Government of the people, by the people, for the people, shall not perish from the earth.

Here I stand, I can do no other. God help me. Amen.

-- Martin Luther

My time will surely come.

-- Gregor Mendel

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

-- Louis Pasteur

Aerodynamically, the bumble bee shouldn't be able to fly, but the bumble bee doesn't know it so it goes on flying anyway.

-- Mary Kay Ash

Perseverance is my motto.

-- Madam C. J. Walker

I have never worked a day in my life without selling. If I believe in something, I sell it, and I sell it hard.

-- Estée Lauder