What is in great demand, but scarce, is expensive, but even when wisdom is not in demand it is priceless.

A genuine smile is one of the world’s rarest treasures.

A fish that is afraid of drowning in a river is ignorant of its gifts.

A diamond earns its sparkle from the pressure it endures.

It is in the storm, not the calm, that a rainbow is born.

A determined seed cannot be hidden from the world, not even by dirt.

Calm skies don't make skillful eagles.

If you cry in the rain, only the sky will see your tears.

Birds keep singing beautiful songs, even if they have no audience.

Today's storms help you appreciate tomorrow’s sunshine.

Train the ears to hear more, the eyes to see more, the hands to do more, the feet to accomplish more, the mind to think more, the heart to feel more, and the soul to love more.

The difference between a boss and a leader: a boss says, 'Go!' – a leader says, 'Let's go!

Many believe creativity is mystery, and I always knew that my body is the key.

We worried for decades about WMDs – Weapons of Mass Destruction. Now it is time to worry about a new kind of WMDs – Weapons of Mass Disruption.

I just wish the world was twice as big and half of it was still unexplored.

I've lost you, forever, so many times. And I'd do it all again.

I don't display emotions. I have every feeling that everyone else has, but I've developed ways to suppress them. Anger is one of my most comfortable feelings.

I have preferred chloroform to cancer

Proper preparation is the key to our success. Our acts can be no wiser than our thoughts. Our thinking can be no wiser than our understanding.

Why is it that, among men, physical courage is a trait so plenteous yet moral courage is a trait so rare?

But your isolation must not be mechanical, but spiritual, that is, must be elevation.