Programming is one of the most difficult branches of applied mathematics; the poorer mathematicians had better remain pure mathematicians. Edsger Dijkstra
There is no more difficult art to acquire than the art of observation, and for some men it is quite as difficult to record an observation in brief and plain language. William Osler
It was difficult every ten days having a new director. I'm a real collaborator and, as an actor, I want to be directed. It's hard for me to shift gears. Jeanne Tripplehorn
I think most artists create out of despair. The very nature of creation is not a performing glory on the outside, it's a painful, difficult search within. Louise Berliawsky Nevelson
I loved acting when I was doing it, but getting the jobs I didn't understand because I'd never had to do it. That was a difficult lesson for me. It was very humbling and very bizarre. Mariel Hemingway
One of our most difficult realizations was that - in the course of two years - a connecting hub in St. Louis had gone from something we thought we needed to something we could no longer afford. Gerard Arpey
An athlete who tells you the training is always easy and always fun simply hasn't been there. Goals can be elusive which makes the difficult journey all the more rewarding. Alberto Salazar
Shooting a television show can be very difficult and at times can really wear on you. If you keep reminding yourself that it is a job and you show up together as a team and as a whole, you can prevail. David Boreanaz
It is hard to convince a high-school student that he will encounter a lot of problems more difficult than those of algebra and geometry. Edward W. Howe
I think of horror films as art, as films of confrontation. Films that make you confront aspects of your own life that are difficult to face. Just because you're making a horror film doesn't mean you can't make an artful film. David Cronenberg
The magazine was being started by a company that had no experience in business magazine publishing. It was a little difficult to get people to sort of buy into it and to join the staff, but we did. James Daly
We're producing a movie now, 'The Onion' Movie, and it's very difficult for me to be on the set. If I'm not right in the trenches, it's very difficult for me to watch another director, because I'm not involved and it's not exciting. David Zucker