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.

Let us work without theorizing, 'Tis the only way to make life endurable.

Let us work without theorizing, 'Tis the only way to make life endurable.

You cannot run a business, or anything else, on a theory.

You cannot run a business, or anything else, on a theory.

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.

The theory seems to be that as long as a man is a failure he is one of God's children, read more

The theory seems to be that as long as a man is a failure he is one of God's children, but that as soon as he succeeds he is taken over by the Devil.

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

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

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.

How empty is theory in the presence of fact

How empty is theory in the presence of fact

A young boy is a theory, an old man is a fact.

A young boy is a theory, an old man is a fact.