• I have been impressed with the urgency of doing. Knowing is not enough; we must apply. Being willing is not enough; we must do.I have offended God and mankind because my work didn’t reach the quality it should have.

• 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.

• Iron rusts from disuse; water loses its purity from stagnation… even so does inaction sap the vigor of the mind.

• Life is pretty simple: You do some stuff. Most fails. Some works. You do more of what works. If it works big, others quickly copy it. Then you do something else. The trick is the doing something else.

• Where the spirit does not work with the hand, there is no art.

Leonardo da Vinci