Love is a better teacher than duty.

One picture is worth a thousand words

God has given me a mule-like stubbornness to stick with a difficult problem and the intuitive powers to conceptualize complex hypothetical situations in my mind.

Gradually the conviction gained recognition that all knowledge about things is exclusively a working-over of the raw material furnished by the senses. ... Galileo and Hume first upheld this principle with full clarity and decisiveness.

Condemnation before investigation is the highest form of ignorance.

Albert is a very poor student. He is mentally slow, unsociable and is always daydreaming. He is spoiling it for the rest of the class. It would be in the best interests of all if he were removed from school immediately.

It would seem that men always need some idiotic fiction in the name of which they can hate one another. Once it was religion. Now it is the State.