530. Beware of any sudden change in behaviour.

- Sujit Mukerji

529. Courage does not always roar. Sometimes courage is the quiet voice at the end of the day saying, I will try again tomorrow.

- Mary Anne Redmacher

528. To be 70 years young is sometimes far more cheerful and hopeful than to be 40 years old.

- Oliver Wendell Holmes

527. Plan your life like you will live forever, and live your life like you will die the next day.

526. The healthy man does not torture others – generally it is the tortured who turn into torturers.

- Carl Jung

525. We have just enough religion to make us hate, but not enough to make us love one another.

- Jonathan Swift

524. Harmony makes small things grow; lack of it makes great things decay.

- Sallust

523. Management is doing things right; leadership is doing the right things.

- Peter Drucker

522. Correcting oneself is correcting the whole world. The Sun is simply bright. It does not correct anyone. Because it shines, the whole world is full of light. Transforming yourself is a means of giving light to the whole world.

- Ramana Maharshi

521. Wisdom is to live in the present, plan for the future and profit from the past.