The eye sees only what the mind is prepared to comprehend.

The eye sees only what the mind is prepared to comprehend.

Every man is as Heaven made him, and sometimes a great deal worse.

Every man is as Heaven made him, and sometimes a great deal worse.

The readiness to praise others indicates a desire for excellence and perhaps an ability to realize it.

The readiness to praise others indicates a desire for excellence and perhaps an ability to realize it.

All cruelty springs from weakness.

All cruelty springs from weakness.

Every fairly intelligent person is aware that the price of respectability is a muffled soul bent on the trivial and read more

Every fairly intelligent person is aware that the price of respectability is a muffled soul bent on the trivial and the mediocre.

...ideas have a tendency to live lives of their own, and having become a part of tradition, they are very read more

...ideas have a tendency to live lives of their own, and having become a part of tradition, they are very difficult to root out. When summarized in a few neat words or phrases, these gems of wisdom become substitutes for thought, and gradually take on much of the status of revealed truth. Occasionally, some iconoclast sees fit to challenge one of them, and a brief flurry ensues, after which things go on about as before. It is easy to think of plenty of ideas that are passing, if they have not already passed, beyond the stage of effective discussion.

The history of science knows scores of instances where an investigator was in the possession of all the important facts read more

The history of science knows scores of instances where an investigator was in the possession of all the important facts for a new theory but simply failed to ask the right questions.

It may indeed prove to be far the most difficult and not the least important task for human reason rationally read more

It may indeed prove to be far the most difficult and not the least important task for human reason rationally to comprehend its own limitations. It is essential for the growth of reason that as individuals we should bow to forces and obey principles which we cannot hope fully to understand, yet on which the advance and even the preservation of civilization depend.

To illustrate the difference between the innovator and the dull crowd of routinists who cannot even imagine that any improvement read more

To illustrate the difference between the innovator and the dull crowd of routinists who cannot even imagine that any improvement is possible, we need only refer to a passage in Engel's most famous book. Here, in 1878, Engels apodictically announced that military weapons are "now so perfected that no further progress of any revolutionizing influence is any longer possible." Henceforth "all further [technological] progress is by and large indifferent for land warfare. The age of evolution is in this regard essentially closed." This complacent conclusion shows in what the achievement of the innovator consists: he accomplishes what other people believe to be unthinkable and unfeasible.