Both optimists and pessimists contribute to our society. The optimist invents the airplane and the pessimist the parachute.

Both optimists and pessimists contribute to our society. The optimist invents the airplane and the pessimist the parachute.

Irrationally held truths may be more harmful than reasoned errors.

Irrationally held truths may be more harmful than reasoned errors.

What one generation sees as a luxury, the next sees as a necessity.

What one generation sees as a luxury, the next sees as a necessity.

There is no such thing as truth.

There is no such thing as truth.

It is the test of a good religion whether you can make a joke about it.

It is the test of a good religion whether you can make a joke about it.

The common idea that success spoils people by making them vain, egotistic, and self-complacent is erroneous; on the contrary it read more

The common idea that success spoils people by making them vain, egotistic, and self-complacent is erroneous; on the contrary it makes them, for the most part, humble, tolerant, and kind. Failure makes people bitter and cruel.

Scientific research sooner or later, but inevitably, encounters something ultimately given that it cannot trace back to something else of read more

Scientific research sooner or later, but inevitably, encounters something ultimately given that it cannot trace back to something else of which it would appear as the regular or necessary derivative. Scientific progress consists in pushing further back this ultimately given.

You can find your way across this country using burger joints the way a navigator uses stars.

You can find your way across this country using burger joints the way a navigator uses stars.

The affairs of life embrace a multitude of interests, and he who reasons in any one of them, without consulting read more

The affairs of life embrace a multitude of interests, and he who reasons in any one of them, without consulting the rest, is a visionary unsuited to control the business of the world.