Never soar aloft on an enemy's pinions.

Never soar aloft on an enemy's pinions.

Don't ever take a fence down until you know the reason it was put up.

Don't ever take a fence down until you know the reason it was put up.

Reality confronts man with a great many "musts," but all of them are conditional; the formula of realistic necessity is: read more

Reality confronts man with a great many "musts," but all of them are conditional; the formula of realistic necessity is: "You must, if " and the "if" stands for man's choice

The process of evolution may be described as differentiation of structure and integration of function. The more differentiated and specialized read more

The process of evolution may be described as differentiation of structure and integration of function. The more differentiated and specialized the parts, the more elaborate co-ordination is needed to create a well-balanced whole. The ultimate criterion of the value of a functional whole is the degree of its internal harmony or integratedness, whether the "functional whole" is a biological species or a civilization or an individual. A whole is defined by the pattern of relations between its parts, not by the sum of its parts; and a civilization is not defined by the sum of its science, technology, art and social organization, but by the total pattern which they form, and the degree of harmonious integration in that pattern.

Peace is a natural effect of trade.

Peace is a natural effect of trade.

There is apparently no surer way of turning a thing into its opposite than by exaggerating it.

There is apparently no surer way of turning a thing into its opposite than by exaggerating it.

The best thing about dreams is that fleeting moment, when you are between asleep and awake, when you don't know read more

The best thing about dreams is that fleeting moment, when you are between asleep and awake, when you don't know the difference between reality and fantasy, when for just that one moment you feel with your entire soul that the dream is reality, and it really happened.

The rule seems to be that those who find no difficulty in deceiving themselves are easily deceived by others. They read more

The rule seems to be that those who find no difficulty in deceiving themselves are easily deceived by others. They are easily persuaded and led.

Scientific progress consists in the development of new concepts.

Scientific progress consists in the development of new concepts.