"The only limit to our realization of tomorrow will be our doubts of today."

The key to success is to focus on the long term and not get distracted by short-term fluctuations.

要理解他人，必须先理解自己。

All men are immortal， but those who are not educated are immortal in a lower and less enviable sense.

The more we realize our minuteness and our impotence in the face of cosmic forces, the more astonishing becomes what human beings have achieved.

成功的关键是专注于基础并完美地执行它们。

爱是世界上最强大的力量。