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.

Seek ye first the good things of the mind, and the rest will either be supplied or its loss will read more

Seek ye first the good things of the mind, and the rest will either be supplied or its loss will not be felt.

Add a few drops of malice to a half truth and you have an absolute truth.

Add a few drops of malice to a half truth and you have an absolute truth.

Conscience is the inner voice which warns us that someone may be looking.

Conscience is the inner voice which warns us that someone may be looking.

Habits are to the soul what the veins and arteries are to the blood, the courses in which it moves.

Habits are to the soul what the veins and arteries are to the blood, the courses in which it moves.

When an elephant is in trouble even a frog will kick him.

When an elephant is in trouble even a frog will kick him.

Our species is the only creative species, and it has only one creative instrument, the individual mind and spirit of read more

Our species is the only creative species, and it has only one creative instrument, the individual mind and spirit of a man. Nothing was ever created by two men. There are no good collaborations, whether in music, in art, in poetry, in mathematics, in philosophy. Once the miracle of creation has taken place, the group can build and extend it, but the group never invents anything. The preciousness lies in the lonely mind of a man.

Human reason can neither predict nor deliberately shape its own future. Its advances consist in finding out where it has read more

Human reason can neither predict nor deliberately shape its own future. Its advances consist in finding out where it has been wrong.

There are in fact four very different stumbling blocks in the way of grasping the truth, which hinder every man read more

There are in fact four very different stumbling blocks in the way of grasping the truth, which hinder every man however learned, and scarcely allow anyone to win a clear title to wisdom, namely, the example of weak and unworthy authority, longstanding custom, the feeling of the ignorant crowd, and the hiding of our own ignorance while making a display of our apparent knowledge.