A Quote by Leonardo da Vinci

Being engulfed in practice without delicate knowledge related to it, is in many ways like entering a ship without knowing where it is headed. — © Leonardo da Vinci
Being engulfed in practice without delicate knowledge related to it, is in many ways like entering a ship without knowing where it is headed.
Those who are in love with practice without knowledge are like the sailor who gets into a ship without rudder or compass and who never can be certain whether he is going. Practice must always be founded on sound theory, and to this Perspective is the guide and the gateway; and without this nothing can be done well in the matter of drawing.
Those who are enamoured of practice without science are like a pilot who goes into a ship without rudder or compass and never has any certainty of where he is going. Practice should always be based upon a sound knowledge of theory.
Genius is neither learned nor acquired. It is knowing without experience. It is risking without fear of failure. It is perception without touch. It is understanding without research. It is certainty without proof. It is ability without practice. It is invention without limitations. It is imagination without boundaries. It is creativity without constraints. It is...extraordinary intelligence!
According to Krishnamacharya , practice and knowledge must always go together. He used to say, practice without right knowledge of theory is blind. This is also because without right knowledge, one can mindfully do a wrong practice.
He who loves practice without theory is like the sailor who boards ship without a rudder and compass and never knows where he may cast.
But how can you understand a war without any knowledge of the society where it happens? It's like trying to understand birth without knowing anything about pregnancy or conception. Or like trying to understand our current economic collapse without knowing what a derivative is.
Those who fall in love with practice without science are like a sailor who enters a ship without a helm or a compass, and who never can be certain whither he is going.
Of true knowledge at any time, a good part is merely convenient, necessary indeed to the worker, but not to an understanding of his subject: One can judge a building without knowing where to buy the bricks; one can understand a violin sonata without knowing how to score for the instrument. The work may in fact be better understood without a knowledge of the details of its manufacture, of attention to these tends to distract from meaning and effect.
As there are so many who talk prose without knowing it, or, again, who syllogize without having the least idea what a syllogism is, so economists have long been mathematicians without being aware of the fact.
Without a doubt my mother was an inspiration for my writing. This is true in many ways, but mostly because she is a wonderful storyteller, without even knowing it.
Before going back to college, i knew i didn't want to be an intellectual, spending my life in books and libraries without knowing what the hell is going on in the streets. Theory without practice is just as incomplete as practice without theory. The two have to go together.
He was no more, freed from being, entering into nowhere without even knowing it. Just as he'd feared from the start.
Economy without ecology means managing the human nature relationship without knowing the delicate balance between humankind and the natural world
For, what is a family without a steward, a ship without a pilot, a flock without a shepherd, a body without a head, the same, I think, is a kingdom without the health and safety of a good monarch.
Could many of our ills today have resulted from our failure to train a strong citizenry from the only source we have - the boys and girls of each community? Have they grown up to believe in politics without principle, pleasure without conscience, knowledge without effort, wealth without work, business without morality, science without humanity, worship without sacrifice?
Knowledge without practice is useless. Practice without knowledge is dangerous.
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