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

Experience does not err. Only your judgments err by expecting from her what is not in her power.
Leonardo da Vinci

The measure of a man is what he does with power.
Plato

No one is a friend to his friend who does not love in return.
Plato

I tried to keep both arts alive, but the camera won. I found that while the camera does not express the soul, perhaps a photograph can!
Ansel Adams

A lie does not consist in the indirect position of words, but in the desire and intention, by false speaking, to deceive and injure your neighbour.
Jonathan Swift

Remember, man does not live on bread alone: sometimes he needs a little buttering up.
John C. Maxwell

Acting deals with very delicate emotions. It is not putting up a mask. Each time an actor acts he does not hide; he exposes himself.
Rodney Dangerfield

It is necessary to the happiness of man that he be mentally faithful to himself. Infidelity does not consist in believing, or in disbelieving, it consists in professing to believe what he does not believe.
Thomas Paine

That God cannot lie, is no advantage to your argument, because it is no proof that priests can not, or that the Bible does not.
Thomas Paine

'He means well' is useless unless he does well.
Plautus

A mouse does not rely on just one hole.
Plautus

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

If John Kerry had a dollar for every time he bragged about serving in Vietnam - oh wait, he does.
Ann Coulter

The more the division of labor and the application of machinery extend, the more does competition extend among the workers, the more do their wages shrink together.
Karl Marx

Society does not consist of individuals but expresses the sum of interrelations, the relations within which these individuals stand.
Karl Marx

History does nothing; it does not possess immense riches, it does not fight battles. It is men, real, living, who do all this.
Karl Marx

A great country worthy of the name does not have any friends.
Charles de Gaulle

One does not arrest Voltaire.
Charles De Gaulle