Believe in yourself and all that you are.

The only thing more dangerous than ignorance is arrogance.

Quality is not a chance; it is a choice.

The next green revolution must be both productive and environmentally responsible.

"The power is in the balance: we are our injuries, as much as we are our successes."

The truth is at once simpler and more complicated.

El silencio es a veces la mejor respuesta.

施予他人比接受来得更有福气。