Only those who will risk going too far can possibly find out how far one can go.
The greatest challenge to any thinker is stating the problem in a way that will allow a solution.
The major challenges facing humanity today are global – climate change, accessible fresh water, ever decreasing bio-diversity and over population. These problems call for global solutions and these solutions will require co-operation on a global scale unparalleled in history. Peace is the essential prerequisite to create the environment to achieve the levels of co-operation necessary.steve killelea
Never measure the height of a mountain until you have reached the top. Then you will see how low it was.dag hammarskjöld
Welcome the task that makes you go beyond yourself.unknown
Time is shortening. But everyday that I challenge this cancer and survive is a victory for me.ingrid bergman
Teachers can change lives with just the right mix of chalk and challenges.Joyce Meyer
No dream is too big. No challenge is too great. Nothing we want for our future is beyond our reach.Donald Trump
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