A Quote by Karl Popper

Optimism is a duty. The future is open. It is not predetermined. No one can predict it, except by chance. We all contribute to determining it by what we do. We are all equally responsible for its success.
Optimism is a strategy for making a better future. Because unless you believe that the future can be better, it’s unlikely you will step up and take responsibility for making it so. If you assume that there’s no hope, you guarantee that there will be no hope. If you assume that there is an instinct for freedom, there are opportunities to change things, there’s a chance you may contribute to making a better world. The choice is yours.
As every entrepreneur and investor sifts through year-end data to predict the next trend or opportunity for financial success, there is a much easier way to accurately predict the future: hang out with those who are creating it.
You don't need to predict the future. Just choose a future -- a good future, a useful future -- and make the kind of prediction that will alter human emotions and reactions in such a way that the future you predicted will be brought about. Better to make a good future than predict a bad one.
There are physical characteristics which are inherited. These include things like good looks, high intelligence, physical coordination. These attributes contribute to success in life, and success in life is a determinant of optimism.
Both individual skill (art) and chance are important factors in determining success or failure.
Rational behavior ... depends upon a ceaseless flow of data from the environment. It depends upon the power of the individual to predict, with at least a fair success, the outcome of his own actions. To do this, he must be able to predict how the environment will respond to his acts. Sanity, itself, thus hinges on man's ability to predict his immediate, personal future on the basis of information fed him by the environment.
When my job was attempting to predict future economic developments for the Shell oil company, I was frequently reminded of an Arabic saying: 'Those who claim to foresee the future are lying, even if by chance they are later proved right.'
Optimization is generally detrimental to future success, but it is the only way to accomplish present success in competition with others who are equally interested in short-term results.
You are equally responsible for your place in the culture, and you must make a contribution, and you must accept responsibility for what goes down on your watch. You have no excuse if you are a conservative not to be concerned about the environment. You are equally responsible.
But in a radically atheist universe, you are not only responsible for doing your duty, You are also responsible for deciding what is your duty.
I don't think there is such a thing as as a real prophet. You can never predict the future. We know why now, of course; chaos theory, which I got very interested in, shows you can never predict the future.
Postulate 1. All chance systems of causes are not alike in the sense that they enable us to predict the future in terms of the past.
Ocean energy can contribute a great deal toward the protection or our atmosphere - without damaging marine ecosystems that are equally vital to the planet's future.
I think from my experience in war and life and science, it all has made me believe that we have one life on this planet. We have one chance to live it and to contribute to the future of society and the future of life. The only "afterlife" is what other people remember of you.
You have to open up to the world and learn optimism...Contentment with the past, happiness with the present, and hope for the future. Learned optimisim.
Most of the women in Greek tragedies have their fates predetermined. The gods dictate that such and such will happen to them, and everything they predict comes true. Not Medea.
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