Customer satisfaction is worthless. Customer loyalty is priceless.

Mental processes exist because they serve a purpose.

唯一的罪过是平庸。

The best fertilizer is the gardener's shadow.

The things we admire in men, kindness and generosity, openness, honesty, understanding and feeling, are the concomitants of failure in our system. And those traits we detest, sharpness, greed, acquisitiveness, meanness, egotism and self-interest, are the traits of success.

Science is the most powerful tool for human beings to understand and transform the world.

Courage is the primary quality of justice.

We come nearest to the great when we are great in humility.