Doubt is the origin of wisdom

Where wisdom reigns, there is no conflict between thinking and feeling.

Don't raise your voice, improve your argument.

If you don't want to slip up tomorrow, speak the truth today.

The one you buy will be the only one that doesn't work.

The future is uncertain but the end is always near.

The first method for estimating the intelligence of a ruler is to look at the men he has around him.

Be realistic: Plan for a miracle

Intelligence is the ability to adapt to change.

I think, therefore I am.

Happiness is not an ideal of reason, but of imagination.

Tell the truth. Sing with passion. Work with laughter. Love with heart. 'Cause that's all that matters in the end.

It is not the strength, but the duration, of great sentiments that makes great men.

Reflect upon your present blessings, of which every man has many; not on your past misfortunes, of which all men have some.

The greatest power we have is the power of choice.

And this sensitivity will create new friendships for you - friendships with trees, with birds, with animals, with mountains, with rivers, with oceans, with stars. Life becomes richer as love grows.

In the midst of movement and chaos, keep stillness inside of you.

To be one, to be united is a great thing. But to respect the right to be different is maybe even greater.

In anger we should refrain both from speech and action.

What can't be cured must be endured.

You are the bows from which your children as living arrows are sent forth.