As a well-spent day brings happy sleep, so life well used brings happy death.
Iron rusts from disuse; water loses its purity from stagnation and in cold weather becomes frozen; even so does inaction sap the vigor of the mind.
Patience serves as a protection against wrongs as clothes do against cold. For if you put on more clothes as the cold increases, it will have no power to hurt you. So in like manner you must grow in patience when you meet with great wrongs, and they will then be powerless to vex your mind.
You do ill if you praise, but worse if you criticize, what you do not understand.
Simplicity is the ultimate sophistication.
Obstacles cannot crush me. Every obstacle yields to stern resolve. He who is fixed to a star does not change his mind.
Every now and then go away, have a little relaxation, for when you come back to your work your judgment will be surer since to remain constantly at work will cause you to lose power of judgment. Go some distance away because then the work appears smaller, and more of it can be taken in at a glance, and a lack of harmony or portion is more readily seen.
For once you have tasted flight you will walk the earth with your eyes turned skywards, for there you have been and there you will long to return.
He who loves practice without theory is like the sailor who boards ship without a rudder and compass and never knows where he may cast.
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.
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.
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.
The noblest pleasure is the joy of understanding.
Where the spirit does not work with the hand, there is no art.
Who sows virtue reaps honor.
Anyone who conducts an argument by appealing to authority is not using his intelligence; he is just using his memory.
Study the science of art and the art of science.
Learn how to see and remember that everything is connected to everything else.
Good students naturally thirst after knowledge.
There are three classes of people. Those who see: those who see when they are shown: those who do not see.
Poor is the pupil who does not surpass his teacher.