Leonardo da Vinci

Time stays long enough for anyone who will use it.

Leonardo da Vinci

Where there is shouting, there is no true knowledge.

Leonardo da Vinci

You can have no dominion greater or less than that over yourself.

Leonardo da Vinci

Your brain is much better than you think; just use it!

Leonardo da Vinci

All our knowledge has its origin in our perceptions.

Leonardo da Vinci

Although nature commences with reason and ends in experience it is necessary for us to do the opposite, that is to commence with experience and from this to proceed to investigate the reason.

Leonardo da Vinci

Anyone who conducts an argument by appealing to authority is not using his intelligence; he is just using his memory.

Leonardo da Vinci

Art is never finished, only abandoned.

Leonardo da Vinci

As a well-spent day brings happy sleep, so a life well spent brings happy death.

Leonardo da Vinci

As every divided kingdom falls, so every mind divided between many studies confounds and saps itself.

Leonardo da Vinci