It's not enough that you believe what you see. You must also understand what you see.

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

Experience does not err; only your judgments err by expecting from her what is not in her power.

What is fair in men, passes away, but not so in art

The human bird shall take his first flight,filling the words with amazement,all writings with his fame,and bringing eternal glory to those whose nest whence he sprang.

It is an acknowledged fact that we perceive errors in the work of others more readily than in our own.

Whatever you do in life, if you want to be creative and intelligent, and develop your brain, you must do everything with the awareness that everything, in some way, connects to everything else. Leonardo da Vinci

Life is pretty simple: You do some stuff. Most fails. Some works. You do more of what works.

The greatest deception men suffer is from their own opinions.

Be a mirror, absorb everything around you and still remain the same

Experience is a truer guide than the words of others.

Nature is the source of all true knowledge. She has her own logic, her own laws, she has no effect without cause nor invention without necessity.

Nothing strengthens authority so much as silence.

I am not poor. Poor are those who desire many things.

Your brain is much better than you think; just use it!

Beauty perishes in life, but is immortal in art.

Freethinkers are those who are willing to use their minds without prejudice and without fearing to understand things that clash with their own customs, privileges, or beliefs. This state of mind is not common, but it is essential for right thinking.

Everyone thinks of changing the world, but no one thinks of changing himself.

If you make it a habit not to blame others, you will feel the growth of the ability to love in your soul, and you will see the growth of goodness in your life.