True success comes from making a positive impact, not just making a profit.

We are all of us made by what we have lost as much as by what we have gained.

Every effort is for a better future.

The wall tells a story.

Confidence isn't optimism or pessimism, and it's not a character attribute. It's the expectation of a positive outcome.

We must always question our assumptions and be willing to revise our theories in light of new evidence.

即使在坟墓里，一切也未必全失。