Experience never errs; it is only your judgments that err by promising themselves effects such as are not caused by your experiments.
From Leonardo da Vinci
Nothing strengthens authority so much as silence.
The poet ranks far below the painter in the representation of visible things, and far below the musician in that of invisible things.
I have offended God and mankind because my work didn't reach the quality it should have.
Time stays long enough for anyone who will use it.
As every divided kingdom falls, so every mind divided between many studies confounds and saps itself.
The divisions of Perspective are 3, as used in drawing; of these, the first includes the diminution in size of opaque objects; the second treats of the diminution and loss of outline in such opaque objects; the third, of the diminution and loss of colour at long distances.
The beginnings and ends of shadow lie between the light and darkness and may be infinitely diminished and infinitely increased. Shadow is the means by which bodies display their form. The forms of bodies could not be understood in detail but for shadow.
The length of a man's outspread arms is equal to his height.
Knowledge of the past and of the places of the earth is the ornament and food of the mind of man.
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