| Dale Carnegie |  You never achieve success unless you like what you are doing.
Dale Carnegie |
| Dalton Trumbo | A good businessman never makes a contract unless he's sure he can carry it through, yet every fool on earth is perfectly willing to sign a marriage contract without considering whether he can live up to it or not.
Dalton Trumbo |
| Dan Millman | Unless someone truly has the power to say no, they never truly have the power to say yes.
Dan Millman |
| Dana Rohrabacher | Unless we provide consequences for activities and actions that are wrong, we are not going to get any truth.
Dana Rohrabacher |
| Daniel J. Boorstin | Nothing is really real unless it happens on television.
Daniel J. Boorstin |
| Danny Masterson | Unless something real cool comes along, I will probably be doing features, so long as I can make a living doing that. Otherwise, I will do another show.
Danny Masterson |
| Dave Barry | Fishing is boring, unless you catch an actual fish, and then it is disgusting.
Dave Barry |
| Dave Barry | Thus the metric system did not really catch on in the States, unless you count the increasing popularity of the nine-millimeter bullet.
Dave Barry |
| David Antin | I'm not sure what theory is, unless it's the pursuit of fundamental questions.
David Antin |
| David Attenborough | I mean, it is an extraordinary thing that a large proportion of your country and my country, of the citizens, never see a wild creature from dawn 'til dusk, unless it's a pigeon, which isn't really wild, which might come and settle near them.
David Attenborough |
| David Attenborough | People are not going to care about animal conservation unless they think that animals are worthwhile.
David Attenborough |
| David Byrne | I never listen to the radio unless I rent a car.
David Byrne |
| David Elliott | Unless you are a born connoisseur of art, you will not be able to judge by yourself why certain art is superior to other art.
David Elliott |
| David Herbert Lawrence | All that we know is nothing, we are merely crammed wastepaper baskets, unless we are in touch with that which laughs at all our knowing.
David Herbert Lawrence |
| David Hockney | Art has to move you and design does not, unless it's a good design for a bus.
David Hockney |
| David Hume | No testimony is sufficient to establish a miracle, unless the testimony be of such a kind, that its falsehood would be more miraculous than the fact which it endeavors to establish.
David Hume |
| David Mamet | It's only words... unless they're true.
David Mamet |
| David O. McKay | Only to the extent that men desire peace and brotherhood can the world be made better. No peace even though temporarily obtained, will be permanent, whether to individuals or nations, unless it is built upon the solid foundation of eternal principles.
David O. McKay |
| David Ogilvy | In the modern world of business, it is useless to be a creative, original thinker unless you can also sell what you create.
David Ogilvy |
| David Ogilvy | It takes a big idea to attract the attention of consumers and get them to buy your product. Unless your advertising contains a big idea, it will pass like a ship in the night. I doubt if more than one campaign in a hundred contains a big idea.
David Ogilvy |
