Thou, O God, dost sell us all good things at the price of labor.
The painter who has no doubt about his own ability will attain very little.
The greater the man's soul, the deeper he loves.
Constancy does not begin, but is that which perseveres.
Experience, the interpreter between creative nature and the human race, teaches the action of nature among mortals: how under the constraint of necessity she cannot act otherwise than as reason, who steers her helm, teaches her to act.
It should not be hard for you to stop sometimes and look into the stains of walls, or ashes of a fire, or clouds, or mud or like places, in which...you may find really marvellous ideas.