I am a Berliner.

Those who make peaceful revolution impossible will make violent revolution inevitable.

Ask not what your country can do for you — ask what you can do for your country.

If you don't give up, you still have a chance. Giving up is the greatest failure.

-- Jack Ma

A ship in port is safe, but that's not what ships are built for.

-- Grace Hopper

Open the shoji screen and look outside; the world is vast.

-- Sakichi Toyoda

The pursuit of science has often been compared to the scaling of mountains.

-- Subrahmanyan Chandrasekhar

I think that if you shake the tree, you ought to be around when the fruit falls to pick it up.

-- Mary Cassatt

Don't tell me I can't do it; don't tell me it can't be done.

-- Howard Hughes