What is important in life is life, and not the result of life.

One is never satisfied with a portrait of persons whom one knows. That is why I have always pitied portraitists. One demands so seldom of others the impossible, but demands just that of the portraitists.

Yes, I have finally arrived to this Capital of the World! I now see all the dreams of my youth coming to life... Only in Rome is it possible to understand Rome.

One mind is enough for a thousand hands.

Dream no small dreams for they have no power to move the hearts of men.

The credit of advancing science has always been due to individuals and never to the age.

What is not started today is never finished tomorrow.