The only way to learn mathematics is to do mathematics.
Faith is not passive waiting; it is active imagination and feeling.
The Greeks understood the mysterious power of the hidden side of things. They bequeathed to us one of the most beautiful words in our language—the word 'enthusiasm'—en theos—a god within.
It's not about ideas. It's about making ideas happen.
The great and chief end, therefore, of men's uniting into commonwealths and putting themselves under government is the preservation of their property.