Where the spirit does not work with the hand, there is no art.
There are three classes of people: those who see, those who see when they are shown, those who do not see.
The noblest pleasure is the joy of understanding.
Learning never exhausts the mind.
Iron rusts from disuse; water loses its purity from stagnation… even so does inaction sap the vigor of the mind.
It had long since come to my attention that people of accomplishment rarely sat back and let things happen to them. They went out and happened to things.