Leonardo da Vinci

Man has much power of discourse, which for the most part is vain and false; animals have but little, but it is useful and true, and a small truth is better than a great lie.

The human being is an instrument of God.

The love of anything is the offspring of knowledge, love being more fervent in proportion as knowledge is more certain.

The greatest evil is the ignorance of the truth.

The soul can never be without its body.

Every part of the body is a work of art.

The human mind has first to construct forms, independently of the senses, before it can find them in the world.

The human race is a race of fools.

The soul is that which governs the body.

The human body is a machine, a mechanism, a marvel of engineering.

The soul is the seat of all our thoughts and feelings.

The soul is the essence of life.

The soul is the source of all our actions.

The soul is the light of the body.

The soul is the mirror of the universe.

The soul is the breath of God.

Experience is the sole interpreter of the artifices of nature.

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

The greatest genius will ever be the most ready to learn, and that not only from books and masters, but from everything that is about him.

The most subtle discoveries are made by those who are not afraid to make mistakes.