Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.
Imagination is more important than knowledge...
It is the supreme art of the teacher to awaken joy in creative expression and knowledge.
We don't know a millionth of one percent about anything.
I wrote somewhere once that the third-rate mind was only happy when it was thinking with the majority, the second-rate mind was only happy when it was thinking with the minority, and the first-rate mind was only happy when it was thinking.
"I have been Foolish and Deluded," said he, "and I am a Bear of No Brain at All."
If I plant a honeycomb outside my house, then it will grow up into a beehive.
Learning is not attained by chance, it must be sought for with ardor and attended to with diligence.
And I may add that it taught me something about the limitations of the small . . . orthodox scientist who won't recognize as knowledge, or as reality, any information that doesn't fit into the already existent science.