Ours, according to Leibnitz, is the best of all possible worlds, and the laws of nature can therefore be described in terms of extremal principles. Thus, arising from corresponding variational problems, the differential equations of mechanics have invariance properties relative to certain groups of coordinate transformations.
Carl Ludwig SiegelRelated topics
best certain differential mechanics nature possible thus Laws LeibnitzRelated quotes
I don't know Who, or what, put the question, I don't know when it was put. I don't even remember answering. But at some moment I did answer Yes to Someone, or Something, and from that hour I was certain that existence is meaningful and that, therefore, my life, in self-surrender, had a goal.
Dag Hammarskjöld
The return from your work must be the satisfaction which that work brings you and the worlds need of that work. With this, life is heaven, or as near heaven as you can get. Without this with work which you despise, which bores you, and which the world does not need this life is hell.
W. E. B. Du Bois
The more we learn of the true nature of non-human animals, especially those with complex brains and corresponding complex social behavior, the more ethical concerns are raised regarding their use in the service of man - whether this be in entertainment, as "pets," for food, in research laboratories, or any of the other uses to which we subject them.
Jane Goodall
I didn't see it then, but it turned out that getting fired from Apple was the best thing that could have ever happened to me. The heaviness of being successful was replaced by the lightness of being a beginner again, less sure about everything. It freed me to enter one of the most creative periods of my life.
Steve Jobs
All that stuff about heavy metal and hard rock, I don't subscribe to any of that. It's all just music. I mean, the heavy metal from the Seventies sounds nothing like the stuff from the Eighties, and that sounds nothing like the stuff from the Nineties. Who's to say what is and isn't a certain type of music?
Ozzy Osbourne