Leonardo da Vinci

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 been impressed with the urgency of doing. Knowing is not enough; we must apply. Being willing is not enough; we must do.

For, verily, great love springs from great knowledge of the beloved object, and if you little know it, you will be able to love it only little or not at all.

Intellectual passion drives out sensuality.

Many are they who have a taste and love for drawing, but no talent; and this will be discernible in boys who are not diligent and never finish their drawings with shading.

Marriage is like putting your hand into a bag of snakes in the hope of pulling out an eel.

Science is the captain, and practice the soldiers.

Experience never errs; it is only your judgments that err by promising themselves effects such as are not caused by your experiments.

All knowledge which ends in words will die as quickly as it came to life, with the exception of the written word: which is its mechanical part.

Experience does not err. Only your judgments err by expecting from her what is not in her power.

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.

Life well spent is long.