Everything that is really great and inspiring is created by the individual who can labor in freedom.
Curiosity is a delicate little plant that, aside from stimulation, stands mainly in need of freedom.
Teaching should be such that what is offered is perceived as a valuable gift and not as a hard duty.
Imagination is more important than knowledge. Knowledge is limited. Imagination encircles the world.
The most important decision we make is whether we believe we live in a friendly or hostile universe.
The idea of a Being who interferes with the sequence of events in the world is absolutely impossible