Leonardo da Vinci

The water you touch in a river is the last of that which has passed, and the first of that which comes; so with time present.

The greatest genius will be the most ready to learn, and the most apt to teach.

He who has most, is most in fear of loss.

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.

Why does the eye see a thing more clearly in dreams than the imagination when awake?

The soul desires to dwell with the body because without the corporeal instruments of the senses it can neither act nor feel.

Every part of the body is a masterpiece of nature.

The love of anything is the fruit of knowledge of that thing.

The physician who knows the diseases, knows the remedies.

The greatest good is to do good to others.

If you are alone you belong entirely to yourself. If you are accompanied by a single companion you belong only half to yourself, or even less, in proportion to the thoughtlessness of his conduct; and if you have more companions, you will fall into the same plight.

The human memory is a wonderful thing that can store a great deal of information, but it is also a terrible thing that can forget a great deal of information.

The greatest pleasure in life is to do what people say you cannot do.

The human body is a machine, but it is a machine that can think and feel.

The eye is the chief means whereby the understanding can most completely and abundantly appreciate the infinite works of nature.

The mind is like a parachute. It doesn't work if it is not open.

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

Life well spent is long.

Blinding ignorance does mislead us. O! Wretched mortals, open your eyes!

The greatest beauty is that of the soul.