A hero is someone who, in spite of weakness, doubt or not always knowing the answers, goes ahead and overcomes anyway.
The relationship between commitment and doubt is by no means an antagonistic one. Commitment is healthiest when it's not without doubt but in spite of doubt.
Millions of people were inspired by the Apollo Program. I was five years old when I watched Apollo 11 unfold on television, and without any doubt it was a big contributor to my passions for science, engineering, and exploration.
There is no doubt that, since 1977 and the launch of Apple II - the first computer it produced for the mass market - many things which used to be done on paper, or on the telephone, have been done easier and faster on a screen.
Everybody faces a blank piece of paper, no matter what they've written or painted or composed before. I can't imagine approaching every single new project with-without doubt.
There is no doubt whatsoever that the U.S. government, lead by Mr. Bush, planned and participated in a coup d'etat in Venezuela in April, 2002.
Certain it is that their power increased always in an exact proportion to the weakness of the Caliphate, and, without doubt, in some of the most distracted periods of the Arabian rule, the Hebrew Princes rose into some degree of local and temporary importance.
We absolutely want to harness nuclear energy for peaceful purposes. There should be no doubt about Saudi Arabian intentions. Whatever we do is going to be under strict compliance with international agreements.
As to the advantages of temperance in the training of the armed forces and of its benefits to the members of the forces themselves, there can be no doubt in the world.
In tribal Botswana, I received some woven necklaces and a handmade bow with three poison arrows. It's framed and hanging on the wall in my living room and is, without a doubt, one of my favorite possessions.
After having dispatched a meal, I went ashore, and found no habitation save a single house, and that without an occupant; we had no doubt that the people had fled in terror at our approach, as the house was completely furnished.
'The Assassins' Gate' is a very tightly controlled story of the ideas that led to the war and the consequences of those ideas in Iraq, and there is no doubt about where it is going and what kind of groundwork is being laid.
Philosophy goes no further than probabilities, and in every assertion keeps a doubt in reserve.
I have no doubt but that the misery of the lower classes will be found to abate whenever the Government assumes a freer aspect and the laws favor a subdivision of Property.
I'm sure Obama is an atheist; I'm sure Kennedy was an atheist, but I doubt if Pope Frank is.
There are races and then there are races. And without a doubt, the Indy 500 is the race that I've always wanted to attend. And now, to be driving the Corvette Pace Car... this is going to be unbelievable.
There is no doubt something has happened that is lasting in terms of attractiveness of the nightmare that is the Islamic State.
The pursuit of pretty formulas and neat theorems can no doubt quickly degenerate into a silly vice, but so can the quest for austere generalities which are so very general indeed that they are incapable of application to any particular.
The floods and fires and storms and droughts that Australia has suffered in the last few years have left no doubt in many Australians' minds about just how much is a stake in a super-heated world.
There is no doubt about precisely when folks began racing each other in automobiles. It was the day they built the second automobile.