The greatest threat to democracy is not from external enemies but from internal decay and the loss of civic virtue.
Innovation is not just about creating something new; it's about improving what already exists to make life better for our customers.
The joy of mathematics comes from the act of creation, not just the result.
人们通常没有意识到,所有的作家,即使是最伟大的作家,首先和最后也都是读者。