Experience is a good teacher, but her fees are very high.

It is astonishing with how little wisdom mankind can be governed, when that little wisdom is its own.

We have enslaved the rest of the animal creation, and have treated our distant cousins in fur and feathers so badly that beyond doubt, if they were able to formulate a religion, they would depict the Devil in human form.

If the universe is running down like a clock, the clock must have been wound up at a date which we could name if we knew it. The world, if it is to have an end in time, must have had a beginning in time.

The wisdom of the wise is an uncommon degree of common sense.

Don't get up from the feast of life without paying for your share of it.

The happiest people seem to be those who have no particular cause for being happy except that they are so.