It's unwise to pay too much, but it's worse to pay too little. When you pay too much, you lose a little money - that's all. When you pay too little, you sometimes lose everything, because the thing you bought was incapable of doing the thing it was bought to do. The common law of business balance prohibits paying a little and getting a lot - it can't be done. If you deal with the lowest bidder, it is well to add something for the risk you run, and if you do that you will have enough to pay for something better.

He who has learned what is commonly considered the whole art of painting, that is, the art of representing any natural object faithfully, has as yet only learned the language by which his thoughts are to be expressed.

Race is precisely of as much consequence in man as it is in any animal.

Some slaves are scoured to their work by whips, others by their restlessness and ambition.

Without mountains the air could not be purified, nor the flowing of the rivers sustained.

Not only is there but one way of doing things rightly, but there is only one way of seeing them, and that is, seeing the whole of them.

Compulsory education... It is a painful, continual, and difficult work; to be done by kindness, by watching, by warning, by precept, and by praise, — but above all — by example.