Truth was always but the daughter of time.
A single and distinct luminous body causes stronger relief in the objects than a diffused light; as may be seen by comparing one side of a landscape illuminated by the sun, and one overshadowed by clouds, and illuminated only by the diffused light of the atmosphere.
He who possesses most must be most afraid of loss.
The motive power is the cause of all life.
Where the spirit does not work with the hand, there is no art.
Nothing is more apt to deceive us than our own judgment of our work. We derive more benefit from having our faults pointed out by our enemies than from hearing the opinions of friends.