An ounce of action is worth a ton of theory.

An ounce of action is worth a ton of theory.

Our theories of the eternal are as valuable as are those which a chick which has not broken its way read more

Our theories of the eternal are as valuable as are those which a chick which has not broken its way through its shell might form of the outside world.

There can be no theory of any account unless it corroborate with the theory of the earth.

There can be no theory of any account unless it corroborate with the theory of the earth.

A theory is no more like a fact than a photograph is like a person.

A theory is no more like a fact than a photograph is like a person.

You have to know you can first. How comes later.

You have to know you can first. How comes later.

If the facts don't fit the theory, change the facts.

If the facts don't fit the theory, change the facts.

Many things difficult to design prove easy to performance.

Many things difficult to design prove easy to performance.

He who loves practice without theory is like the sailor who boards ship without a rudder and compass and never read more

He who loves practice without theory is like the sailor who boards ship without a rudder and compass and never knows where he may cast.

It is the theory that decides what can be observed

It is the theory that decides what can be observed