It is more agreeable to have the power to give than to receive.

When a new book appears one should read an old one.

Americans always do the right thing, once they have exhausted all other possibilities.

There is not one single social or economic principle or concept in the philosophy of the Russian Bolshevik which has not been realized, carried into action, and enshrined in immutable laws a million years ago by the white ant.

You must be prepared for further efforts of mind and body and further sacrifices to great causes, if you are not to fall back into the rut if inertia, the confusion of aim and the craven fear of being great.

We know enough to be sure that the scientific achievements of the next fifty years will be far greater, more rapid, and more surprising, than those we have already experienced. ... Wireless telephones and television, following naturally upon the their present path of development, would enable their owner to connect up to any room similarly equipped and hear and take part in the conversation as well as if he put his head in through the window.

Never, ever ever ever ever give up.