Science is the knowledge of constant things, not merely of passing events, and is properly less the knowledge of general laws than of existing facts.

Don't just look at buildings ... watch them.

The names of great painters are like passing-bells: in the name of Velasquez you hear sounded the fall of Spain; .in the name of Titian, that of Venice; in the name of Leonardo, that of Milan; in the name of Raphael, that of Rome. And there is profound justice in this, for in proportion to the nobleness of the power is the guilt of its use for purposes vain or vile; and hitherto the greater the art, the more surely has it been used, and used solely, for the decoration of pride or the provoking of sensuality.

Do not think of your faults, still less of other's faults; look for what is good and strong, and try to imitate it. Your faults will drop off, like dead leaves, when their time comes.

So far as I have myself observed, the distinctive character of a child is to live always in the tangible present.

Though you may have known clever men who were indolent, you never knew a great man who was so; and when I hear a young man spoken of as giving promise of great genius, the first question I ask about him always is, Does he work?

The anger of a person who is strong, can always bide its time.