No one should be required to see America for the first time.

The majority of people believe in incredible things which are absolutely false. The majority of people daily act in a manner prejudicial to their general well-being.

Do we have the right to rear animals in order to kill them so that we may feed appetites in which we have been artificially conditioned from childhood?

No one should be required to see America for the first time.

It is not the most lovable individuals who stand more in need of love, but the most unlovable

All education should be directed toward the refinement of the individual's sensibilities in relation not only to one's fellow humans everywhere, but to all living things whatsoever.

Scientists do not believe in fundamental and absolute certainties. For the scientist, certainty is never an end, but a search; not the ordering of certainty, but its exploration. For the scientist, certainty represents the highest degree of probability.