"Nothing can be loved or hated unless..." - Quote by Leonardo Da Vinci

“How painting surpasses all human works by reason of the subtle possibilities which it contains.”

“Intellectual passion drives out sensuality.”

“Constancy does not begin, but is that which perseveres.”

“Beware of false knowledge; it is more dangerous than ignorance.”

“Much that we hug today as knowledge is ignorance pure and simple. It makes the mind wander and even reduces it to a vacuity.”

“Be a collector of good ideas. Keep a journal. If you hear a good idea, capture it, write it down. Don't trust your memory.”

“Love is not loveWhich alters when it alteration finds,Or bends with the remover to remove.O, no! It is an ever-fixed mark,That looks on tempests and is never shaken.It is the star to every wandering bark,Whose worth's unknown, although his height be taken.”

“Full many a lady I have eyed with best regard, and many a time Th' harmony of their tongues hath into bondage Brought my too diligent ear; for several virtues Have I liked several women; never any With so full soul but some defect in her Did quarrel with the noblest grace she owed, And put it to the foil.”

“Love does not traffic in a marketplace, nor use a huckster's scales. Its joy, like the joy of the intellect, is to feel itself alive. The aim of Love is to love: no more, and no less. You were my enemy: such an enemy as no man ever had. I had given you all my life, and to gratify the lowest and most contemptible of all human passions, hatred and vanity and greed, you had thrown it away. In less than three years you had entirely ruined me in every point of view. For my own sake there was nothing for me to do but to love you.”