If you can't fly then run, if you can't run then walk, if you can't walk then crawl, but whatever you do you have to keep moving forward.

A liar will not be believed even when he speaks the truth.

Man needs his difficulties because they are necessary to enjoy success.

I don’t think we are going to become extinct. We are very clever and very resourceful.

We're lost, but we're making good time

Start by doing what is necessary, then what is possible, and suddenly you are doing the impossible.

Identify your problems but give your power and energy to solutions

March on. Do not tarry. To go forward is to move toward perfection. March on, and fear not the thorns, or the sharp stones on life's path.

You're never as good as everyone tells you when you win, and you're never as bad as they say when you lose.

Find out who you are and do it on purpose.

Make today worth remembering.

I want to know what passion is. I want to feel something strongly.

Give yourself something to work toward - constantly.

If you fell down yesterday, stand up today.

Look up at the stars and not down at your feet. Try to make sense of what you see, and wonder about what makes the universe exist. Be curious.

To give pleasure to a single heart by a single act is better than a thousand heads bowing in prayer.

A superior man is modest in his speech, but exceeds in his actions.

To myself I am only a child playing on the beach, while vast oceans of truth lie undiscovered before me.

Imagination will often carry us to worlds that never were, but without it we go nowhere.

In winter, I plot and plan. In spring, I move.

You need a little bit of insanity to do great things.