Be wiser than other people, if you can, but do not tell them so.
The true worth of an experimenter consists in his pursuing not only what he seeks in his experiment, but also what he did not seek.
Why think? Why not try the experiment?
Every now and then when your life gets complicated and the weasels start closing in, the only cure is to load up on heinous chemicals and then drive like a bastard from Hollywood to Las Vegas … with the music at top volume and at least a pint of ether.
What can be more palpably absurd than the prospect held out of locomotives travelling twice as fast as stagecoaches?
Inventions reached their limit long ago, and I see no hope for further development.
No flying machine will ever fly from New York to Paris … [because] no known motor can run at the requisite speed for four days without stopping.
There is no reason for any individual to have a computer in their home.