Nature never breaks her own laws. Leonardo da Vinci
Obstacles cannot crush me. Every obstacle yields to stern resolve. He who is fixed to a star does not change his mind. Leonardo da Vinci
Just as iron rusts from disuse, even so does inaction spoil the intellect. Leonardo da Vinci
Learning never exhausts the mind. Leonardo da Vinci
I have offended God and mankind because my work did not reach the quality it should have. Leonardo da Vinci
The greatest deception men suffer is from their own opinions. Leonardo da Vinci
Simplicity is the ultimate sophistication. Leonardo da Vinci