It is merely a linguistic peculiarity, not a logical fact, that we say "that is red" instead of "that reddens," either in the sense of growing, becoming, red, or in the sense of making something else red.

Some things which are remote in space and time from a living creature, especially a human creature, may form his environment even more truly than some of the things close to him.

The aim of education is to enable individuals to continue their education ... (and) the object and reward of learning is continued capacity for growth. Now this idea cannot be applied to all the members of a society except where intercourse of man with man is mutual, and except where there is adequate provision for the reconstruction of social habits and institutions by means of wide stimulation arising from equitably distributed interests. And this means a democratic society.

Teaching may be compared to selling commodities. No one can sell unless somebody buys.

Science is a systematic means of gaining reliable knowledge.

By reading the characteristic features of any man's castles in the air you can make a shrewd guess as to his underlying desires which are frustrated.

The intellectual content of religions has always finally adapted itself to scientific and social conditions after they have become clear.... For this reason I do not think that those who are concerned about the future of a religious attitude should trouble themselves about the conflict of science with traditional doctrines.