Leonardo da Vinci

Simplicity is the ultimate sophistication.

The noblest pleasure is the joy of understanding.

Truth was the only daughter of time.

The works of nature are such that they do not exist without cause.

To develop a complete mind: Study the science of art; Study the art of science. Learn how to see. Realize that everything connects to everything else.

Experience is a truer guide than the words of others.

Weight, force, and percussion, with their respective causes, are all that is known of the movements of bodies.

Nature is full of infinite causes that have never occurred in experience.

Blind ignorance misleads us and makes us content with this empty life.

It is an easy thing to praise and blame, but not so easy to know what to praise and what to blame.

Study without desire spoils the memory, and it retains nothing that it takes in.

The greatest pleasure and the greatest knowledge is to understand why everything is as it is.

As a well-spent day brings happy sleep, so a life well spent brings happy death.

The painter has the universe in his mind and hands.

Reprove a friend in secret, but praise him openly.

The mind of the painter is a copy of the divine mind, since it operates freely in creating countless forms of animals, plants, fruits, landscapes, countrysides, ruins, and other things.

The eye, which is called the window of the soul, is the principal means by which the understanding can most completely and abundantly appreciate the infinite works of nature.

Necessity is the mistress and guide of nature.

Just as a well-filled day brings blessed sleep, so a well-employed life brings a blessed death.

The knowledge of all things is possible.