"The desire to know is natural to..." - Quote by Leonardo Da Vinci

“He who thinks little errs much.”

“As regards this vice, we read that the peacock is more guilty of it than any other animal. For it is always contemplating the beauty of its tail, which it spreads in the form of a wheel, and by its cries attracts to itself the gaze of the creatures that surround it. And this is the last vice to be conquered.”

“All our knowledge is the offspring of our perceptions.”

“When you are ignorant about something, to know that you are ignorant about it - that is knowledge.”

“All possible knowledge, then, depends on the validity of reasoning...Unless human reasoning is valid no science can be true.”

“Thus our own age is essentially one of understanding, and on the average, perhaps, more knowledgeable than any former generation, but it is without passion. Every one knows a great deal, we all know which way we ought to go and all the different ways we can go, but nobody is willing to move.”

“Man will do many things to get himself loved, he will do all things to get himself envied.”

“Where your pleasure is, there is your treasure: where your treasure, there your heart; where your heart, there your happiness”

“Everything that we want is downstream... And you don't have even have to turn the boat and paddle downstream, just let go of the oars, the current will carry you.”