Gratitude is an illness suffered by dogs.

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.

Humans have come into being for the sake of each other, so either teach them, or learn to bear them.

I don't think necessity is the mother of invention. Invention ... arises directly from idleness, possibly also from laziness. To save oneself trouble.

Aim for the highest.

The people who were trying to make this world worse are not taking the day off. Why should I?

We ask ourselves, who am I to be brilliant, gorgeous, handsome, talented and fabulous? Actually, who are you not to be?

The marble not yet carved can hold the form of every thought the greatest artist has.

People should pursue what they're passionate about. That will make them happier than pretty much anything else.

Life is entrusted to man as a treasure which must not be squandered, as a talent which must be used well.

There is no refuge from confession but suicide; and suicide is confession.

When I give, I give myself.

A man can't soar too high, when he flies with his own wings.

Don?t only practice your art, but force your way into its secrets, for it and knowledge can raise men to the divine.

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

Don't ever take a fence down until you know why it was put up.

I confess that in 1901 I said to my brother Orville that man would not fly for fifty years.

I invented my life by taking for granted that everything I did not like would have an opposite, which I would like.

The greatest accomplishment is not in never falling, but in rising again after you fall.

If we go down into ourselves, we find that we possess exactly what we desire.

There is always room at the top.