Do not quit! Hundreds of times I have watched people throw in the towel at the one-yard line while someone else comes along and makes a fortune by just going that extra yard. E. Joseph Cossman
Do not suppose, however, that I intend to urge a diet of classics on anybody. I have seen such diets at work. I have known people who have actually read all, or almost all, the guaranteed Hundred Best Books. God save us from reading nothing but the best. Robertson Davies
Do not wait; the time will never be "just right." Start where you stand, and work with whatever tools you may have at your command, and better tools will be found as you go along. George Herbert
Do the best you can in every task, no matter how unimportant it may seem at the time. No one learns more about a problem than the person at the bottom. Sandra Day O'Connor
Do the one thing you think you cannot do. Fail at it. Try again. Do better the second time. The only people who never tumble are those who never mount the high wire. This is your moment. Own it. Oprah Winfrey
Do we exert our own liberties without injury to others - we exert them justly; do we exert them at the expense of others - unjustly. And, in thus doing, we step from the sure platform of liberty upon the uncertain threshold of tyranny. Frances Wright
Do you have any ambitions outside racing? My main ambition at the moment, whether inside or outside racing, is to become Formula 1 World Champion. Kimi Raikkonen
Do you know all the mystery of life and death? Do you know the altogether of comparative anatomy and can say wherefore the qualities of brutes are in some men, and not in others? Can you tell me why, when other spiders die small and soon, that one great spider lived for centuries in the tower of the old Spanish church and grew and grew, till, on descending, he could drink the oil of all the church lamps? Can you tell me why in the Pampas, ay and elsewhere, there are bats that come out at night and open the veins of cattle and horses and suck dry their veins, how in some islands of the Western seas there are bats which hang on the trees all day, and those who have seen describe as like giant nuts or pods, and that when the sailors sleep on the deck, because that it is hot, flit down on them and then, and then in the morning are found dead men, white as even Miss Lucy was?
Do you know what it means to come home at night to a woman who'll give you a little love, a little affection, a little tenderness? It means you're in the wrong house, that's what it means.
Henny Youngman