"by purposes" is correct and can be used in written English.
For example, you could say, "We organized this event by purposes: to raise money for charity and to bring the community together."
It is nonetheless refreshing to encounter a project animated by purposes so foreign to those of mainstream contemporary art.
What they forget, as Davies asserts, is that "mental processes" are bound up with the actions of human beings embedded in social relations, guided by purposes and intentions which need to be interpreted.
They say the Security Service did want to retrieve the material they thought Miranda was carrying – a claim which necessarily casts some doubt on whether the stop was influenced by purposes other than simply determining whether Miranda was involved in terrorism.
Natural products (animals and their parts, plants, and the four elements) move, grow, change, and reproduce themselves by inner final causes; they are driven by purposes of nature.
However, their works were motivated by purposes other than historiographic ones, such as to explain the reasons for their actions, clean their public images, or express their support or rejection of the public figures and ideas of the time.
Similarly, by purposes like reassuring or persuading, GPs may prefer verbal formats, as was shown e.g. for clinical geneticists [ 45].
