Hundreds of drawings of Rembrandt's exhibit evidence of the infinite extent of his experiments after perfection.

The drawings of Velasquez can be counted on the fingers of one hand.

He drew in paint upon the canvas.

From his portraits and pictures we gather not the faintest idea of what he felt, what he thought, what he believed.

One thing we know absolutely--that he saw as keenly and as searchingly as any painter who has ever lived.