I must try to live austerely, as Plato did.. .I need to live a more solitary life.. .Valuable ideas beyond number miscarry because I have no continuity in my thoughts.. ..The things which we experience for ourselves when we are on our own are stronger by far, and fresher... [his painting 'The Massacre at Chios' was half done when he wrote this note].

He Titian is the least mannered and consequently the most varied of artists. Mannered talents have but one bias, one usage only. They are more apt to follow the impulse of the hand than to control it. Those that are less mannered must be more varied, for they continually respond to genuine emotion.

Nature is just a dictionary, you hunt in it for words.. ..you find in it the elements which make a phrase or a story; but nobody would regard a dictionary as a composition in the poetic sense of the term. Besides, nature is far from being always interesting from the point of view of the effect of the whole.. .If each detail is perfect in some way, the union of these details seldom gives an effect equivalent to that which arises, in the work of a great artist, from the total composition.

..The movement and the rustle of the branches [in the forest, while losing his attention for chasing] delights me. The clouds float past and I lift my head to follow their flight, or think about some madrigal, when a slight sound, which has been going on for a little while, rouses me slowly from my dream.; at least I turn my head and see, to my grief, a little white scut just disappearing into the thicket...

Proportion applies to sculpture as to painting; perspective determines the contour; chiaroscuro gives relief through the disposition of lights and shadows in their relationship with the background; color gives the appearance of life.. .The colorists, the men who unite all the phases of painting, have to establish, at once and from the beginning, everything that is proper and essential to their art. They have to mass things in with color, even as the sculptor does with clay, marble or stone; their sketch, like that of the sculptor, must also render proportion, perspective effect, and color.

The landscape [in the painting 'The Bathers', 1853, by Courbet ] is of an extraordinary vigor, but Courbet has done no more than enlarge a study exhibited there, near his large canvas; the conclusion is that the figures [the two bathers in the painting] were put in afterwards and without connection with their surroundings. This brings up the question of harmony between the accessories and the principal object, a thing lacking in the majority of great painters, [15 April 1853]

The Natural History Museum is open to the public on Tuesdays and Fridays. Elephant, rhinoceros, hippopotamus; extraordinary animals! Rubens rendered them marvellously. I had a feeling of happiness as soon as I entered the place and the further I went the stronger it grew. I felt my whole being rise above commonplaces and trivialities and the petty worries of my daily life.

Authorities are the ruination of great talents, and form almost the entire talent of mediocrities. They are the leading strings with which everyone learns to walk at the beginning of their careers, but they almost always leave a permanent mark. People like Ingres never get them out of their systems and never take a step without invoking their help. It is as though they wished to eat bread and milk all their lives (Monday 10th October 1853)