"Every instrument requires to be made by experience."

Leonardo da Vinci Mathematics See all quotes by Leonardo da Vinci →

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“3 miglia più in là si trova li edifici della vena del rame e dello argento, presso una terra detta Pra Santo Petro e vene di ferro e cose fantastiche. (Ancient Italian)”

“truovasi di miglio i(n) miglio bone osteriee. (Ancient Italian)”

“Subito salse in me due cose: paura e desiderio: paura per la minacciante e scura spelonca, desiderio per vedere se là entro fusse alcuna miracolosa cosa. (Ancient Italian)”

“Fa vini potenti e assai, … e ‘l vino vale el più uno soldo il boccale e la libbra della vitella un soldo e ‘l sale 10 dinari, e ‘l simile il burro, ed è la loro libbra 30 once, e l’ova un soldo la soldata. (Modern Italian)”

“Movement will fail sooner than usefulness.”

“A shadow will appear dark in proportion to the brilliancy of the light surrounding it and conversely it will be less conspicuous where it is seen against a darker background.”

Resonant Thoughts

"The responsibility for leaders developing results-based leaders is shared. Current leaders who are senior managers have the ultimate challenge of preparing a next generation of leaders, every one of w…"

— Dave Ulrich

Economics1953

#leadership

"Had I so interfered in behalf of the rich, the powerful, the intelligent, the so-called great, or in behalf of any of their friends, either father, mother, brother, sister, wife, or children, or any o…"

— John Brown (abolitionist)

Social Activism1800–1859

#family

"A guilty system recognizes no innocents. As with any power apparatus which thinks everybody’s either for it or against it, we’re against it. You would be too, if you thought about it. The very way you…"

— Iain Banks

Literature1954–2013

#philosophy

"On his controversial initiative "Opportunity NYC": "Now, you might say, 'why should we pay people for doing what they're supposed to do?' It's a fair question -- but think of it this way. Every other …"

— Michael Bloomberg

Politics1942

#science