In the Mahapunnama Sutta - MK the buddha says;
"The four great elements, bhikkhu, are the cause and condition for the manifestation of the material form aggregate"
I cant work out how the elements are the cause for the material form, arent the four elements earth, fire, wind, water with, for example, earth just standing for skin, nail etc and so just characteristics of the material aggregate?
“The Great Way is not difficult for those who have no preferences. When love and hate are both absent, everything becomes clear and undisguised." Verses on the Faith Mind, Sengcan