By nature we have no defect that could not become a strength, no strength that could not become a defect.

One is led astray alike by sympathy and coldness, by praise and by blame

He who has a task to perform must know how to take sides, or he is quite unworthy of it.

Science arose from poetry... when times change the two can meet again on a higher level as friends.

A distracted existence leads us to no goal

No two people see the world exactly alike, and different temperaments will often apply the same principle, recognized by both, differently. Even one and the same person won't always maintain the same views and judgments: earlier convictions must give way to later ones.

Many young painters would never have taken their pencils in hand if they could have felt, known, and understood, early enough, what really produced a master like Raphael.