Real knowledge is to know the extent of one's ignorance.

There is no question climate change is happening. The only arguable point is what part humans are playing in it.

It takes a lot of courage to show your dreams to someone else.

Words mean more than what is set down on paper. It takes the human voice to infuse them with deeper meaning.

At the center of your being you have the answer; you know who you are and you know what you want.

If we do not lay out ourselves in the service of mankind whom should we serve?

One who loses wealth loses much. One who loses a friend loses more. But one who loses courage loses all.

A crust eaten in peace is better than a banquet partaken in anxiety.

So many people have this idea: I want to achieve something great or be somebody great. And they neglect the step that leads to greatness. They don't honor this step at this moment because they have this idea of some future moment where they are going to be great.

A good teacher protects his pupils from his own influence.

Never argue with an idiot. They drag you down to their level and then beat you with experience.

There are no limitations to the mind except those we acknowledge.

Be frank and explicit. That is the right line to take when you wish to conceal your own mind and to confuse the minds of others.

Let him who would move the world first move himself.

Admiration is the daughter of ignorance.

There's no sense in being precise when you don't even know what you're talking about.

The weak can never forgive. Forgiveness is the attribute of the strong.

Men become wise just as they become rich, more by what they save than by what they receive.

The oldest, shortest words- 'yes' and 'no'- are those which require the most thought.

You don't become what you want, you become what you believe

If you are a parent, open doors to unknown directions to the child so he can explore. Don't make him afraid of the unknown,give him support.