All our knowledge has its origins in our perceptions.

• Art is never finished, only abandoned.
• Where the spirit does not work with the hand, there is no art.
• The human foot is a masterpiece of engineering and a work of art.
• I love those who can smile in trouble, who can gather strength from distress, and grow brave by reflection. 'Tis the business of little minds to shrink, but they whose heart is firm, and whose conscience approves their conduct, will pursue their principles unto death.
• He who is fixed to a star does not change his mind.
• Just as courage imperils life, fear protects it.
• While I thought that I was learning how to live, I have been learning how to die.
• I love those who can smile in trouble, who can gather strength from distress, and grow brave by reflection. 'Tis the business of little minds to shrink, but they whose heart is firm, and whose conscience approves their conduct, will pursue their principles unto death.
• As a well-spent day brings happy sleep, so a life well spent brings happy death.
• Our life is made by the death of others.