1 - Cooperation is the common endeavor of two or more people to perform a task or reach a jointly cherished goal.

2 - Being a scientist does not prevent one from participating in other fields of human endeavor, just as being an artist does not prevent one from practising science.

3 - Studying the grammar of a foreign or second language is a very difficult endeavor.

4 - Present-day philosophers usually envision their discipline as an endeavor that has been, since antiquity, distinct from and superior to any particular intellectual discipline, such as theology or science.

5 - Any form of scientific endeavor must attempt to transcend its time and place to sustain an independent, doubting stance.