If we know exactly where we're going, exactly how to get there, and exactly what we'll see along the way, we won't learn anything.
It is the mark of an educated mind to be able to entertain a thought without accepting it.
Your visions will become clear only when you can look into your own heart. Who looks outside, dreams; who looks inside, awakes.
Although our intellect always longs for clarity and certainty, our nature often finds uncertainty fascinating.
I wanted to change the world. But I have found that the only thing one can be sure of changing is oneself.
It has seemed to be more necessary to have regard to the weight of words rather than to their number.
Half the world is composed of people who have something to say and can't, and the other half who have nothing to say and keep on saying it.
There are two educations. One should teach us how to make a living and the other how to live.
Do not pray for an easy life, pray for the strength to endure a difficult one.
Promises are like crying babies in a theater, they should be carried out at once.
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 single lie destroys a whole reputation of integrity.
Wonder is the beginning of wisdom.
Science is organized knowledge. Wisdom is organized life.
If you don't like someone's story, write your own.
Where there is anger, there is always pain underneath.
Don't raise your voice, improve your argument.
There is no question climate change is happening. The only arguable point is what part humans are playing in it.
The noblest pleasure is the joy of understanding.
The place where you made your stand never mattered. Only that you were there...and still on your feet.
Creativity is the greatest rebellion in existence.