God made the world as an artist and that is why the world must learn from an artist.
Progress is impossible without change, and those who cannot change their minds cannot change anything.
Success does not consist in never making mistakes but in never making the same one a second time.
A life spent making mistakes is not only more honourable, but more useful than a life spent doing nothing.
No man who is occupied in doing a very difficult thing, and doing it very well, ever loses his self-respect.
Some men see things as they are and ask why. Others dream of things that never were and ask why not.
A life spent making mistakes is not only more honourable, but more useful than a life spent doing nothing.
The power of accurate observation is frequently called cynicism by those who have not got it.