They say Rome wasn't built in a day, but I wasn't on that particular job.

Memories of our lives, of our works and our deeds will continue in others.

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

Imperfection is beauty, madness is genius and it's better to be absolutely ridiculous than absolutely boring.

If you paint in your mind a picture of bright and happy expectations, you put yourself into a condition conducive to your goal.

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.

Never stand begging for what one has the power to earn.

Know thyself.

We cannot do everything at once, but we can do something at once.

To attain the impossible, one must attempt the absurd.

If you don't like something, change it. If you can't change it, change your attitude. Don't complain.

Freedom and independence form my character.

Perseverance and spirit have done wonders in all ages.

Change the way you look at things and the things you look at change.

Drink moderately, for drunkenness neither keeps a secret nor observes a promise.

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

Great spirits have always encountered violent opposition from mediocre minds.

The desire to reach for the stars is ambitious. The desire to reach hearts is wise.

Our life is what our thoughts make it.

If the only tool you have is a hammer, you tend to see every problem as a nail.

A man may die, nations may rise and fall, but an idea lives on.