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The only way to do great work is to love what you do.

The greatest happiness of the thinking man is to have fathomed the fathomable, and to quietly revere the unfathomable.

Never let age be a barrier to learning or discovery.

The only thing necessary for the triumph of evil is for good men to do nothing.

Listen to everyone in your company and figure out ways to get them talking. The folks on the front lines—the ones who actually talk to the customer—are the only ones who really know what's going on out there. You'd better find out what they know.