Although nature commences with reason and ends in experience it is necessary for us to do the opposite, that is to commence with experience and from this to proceed to investigate the reason.
Leonardo da Vinci

Water is the driving force of all nature.
Leonardo da Vinci

Human subtlety will never devise an invention more beautiful, more simple or more direct than does nature because in her inventions nothing is lacking, and nothing is superfluous.
Leonardo da Vinci

Nature never breaks her own laws.
Leonardo da Vinci

After you have exhausted what there is in business, politics, conviviality, and so on - have found that none of these finally satisfy, or permanently wear - what remains? Nature remains.
Walt Whitman

All men are by nature equal, made all of the same earth by one Workman; and however we deceive ourselves, as dear unto God is the poor peasant as the mighty prince.
Plato

He who is of calm and happy nature will hardly feel the pressure of age, but to him who is of an opposite disposition youth and age are equally a burden.
Plato

No man should bring children into the world who is unwilling to persevere to the end in their nature and education.
Plato

To prefer evil to good is not in human nature; and when a man is compelled to choose one of two evils, no one will choose the greater when he might have the less.
Plato

Then not only custom, but also nature affirms that to do is more disgraceful than to suffer injustice, and that justice is equality.
Plato

There are worlds of experience beyond the world of the aggressive man, beyond history, and beyond science. The moods and qualities of nature and the revelations of great art are equally difficult to define; we can grasp them only in the depths of our perceptive spirit.
Ansel Adams

To photograph truthfully and effectively is to see beneath the surfaces and record the qualities of nature and humanity which live or are latent in all things.
Ansel Adams

Where there are large powers with little ambition... nature may be said to have fallen short of her purposes.
Jonathan Swift

Human nature is not of itself vicious.
Thomas Paine

But such is the irresistable nature of truth, that all it asks, and all it wants is the liberty of appearing.
Thomas Paine

The best remedy for those who are afraid, lonely or unhappy is to go outside, somewhere where they can be quiet, alone with the heavens, nature and God. Because only then does one feel that all is as it should be.
Anne Frank

It is absolutely impossible to transcend the laws of nature. What can change in historically different circumstances is only the form in which these laws expose themselves.
Karl Marx

Miracles are not contrary to nature, but only contrary to what we know about nature.
Saint Augustine

One of the first conditions of happiness is that the link between Man and Nature shall not be broken.
Leo Tolstoy

Our body is a machine for living. It is organized for that, it is its nature. Let life go on in it unhindered and let it defend itself.
Leo Tolstoy