1.
If you have a wormhole, then you can turn them into time machines for going backward in time.
Kip Thorne
3.
We are kept keen on the grindstone of pain and necessity.
H. G. Wells
5.
When I finally invent a time machine you will already know about it because I'll have told you a long time ago.
Dana Gould
6.
Smell is the closest thing human beings have to a time machine.
Caryl Rivers
8.
All this money can't buy me a time machine.
Katy Perry
10.
Dear Frank Einstein, Please invent time machine. Send your books back in time to me in 1978. Also a levitating skateboard. Tommy
Tom Angleberger