I have wasted my hours.

The wisest and noblest teacher is nature itself.

Common Sense is that which judges the things given to it by other senses.

Affective gestures pointing to things near either in time or space should be made with the hand not very far from the body of the person pointing; and if these things are distant, the hand of the painter should be more extended and the face turned toward the person to whom he is addressing the demonstration.

Those who, in debate, appeal to their qualifications, argue from memory, not from understanding.

Poor is the man who desires a lot

The organ of perception acts more readily than judgment.