“Believe and act as if it were impossible to fail.”

“Logic is an organized way to go wrong with confidence. We should all know by now that a logical course is not always the right one.”

“Problems are the price of progress. Don't bring me anything but trouble.”

“The world hates change yet it is the only thing that has brought progress.”

“Virtually nothing comes out right the first time. Failures repeated failures are finger posts on the road to achievement. The only time you don't want to fail is the last time you try something.....”

“We need to teach a highly educated person that it is not a disgrace to fail and that he must analyze every failure to find its cause. He must learn how to fail intelligently for failing is one of ...”

“A true philosopher must never give up.”

“...these sleepless nights, when oddly enough my concentration was high, fueled perhaps by the effort to ignore the all-engrossing threat of bombs and rockets.”

“Never, never, never give in!”