A subtle thought that is in error may yet give rise to fruitful inquiry that can establish truths of great value.

All that is valuable in human society depends upon the opportunity for development accorded the individual.

Bad times have a scientific value. These are occasions a good learner would not miss.

Give not that which is holy unto the dogs, neither cast ye your pearls before swine.

I conceive that the great part of the miseries of mankind are brought upon them by false estimates they have made of the value of things.

If a man have an hundred sheep, and one of them be gone astray, doth he not leave the ninety and nine, and goeth into the mountains, and seeketh that which is gone astray?

Nothing can have value without being an object of utility.

People exaggerate the value of things they haven't got: everybody worships truth and unselfishness because they have no experience with them.

Take away the dross from the silver, and there shall come forth a vessel for the finer.

Teach us that wealth is not elegance, that profusion is not magnificence, that splendor is not beauty.