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Materials themselves are not important; what matters is how you use them.
The only limits that exist are the ones in your mind.
"The future belongs to those who believe in the beauty of their dreams."
To keep young kids behaving on a car road trip, have a bag of their favorite candy and throw a piece out the window each time they misbehave.
Mathematics is a living subject, constantly evolving with new ideas and discoveries.
The individual is reduced to a negligible quantity, perhaps less in his consciousness than in his habits and in the unconscious adjustments of his life.