Water isn't free; someone is paying a bill to purify the water that comes through that fountain.
Then change it, purify thyself; and as thou art purified, thou wilt gain wisdom.
They are then pressed in a large powerful screw-press, and the oily matter which flows out is caught, mixed with an equal proportion of water, and boiled to purify it from mucilaginous and albuminous matter.
Incidentally he desires also to purify the heart from other violent passions which corrupt it and mar its peace.
It is clear that acetylene, if it is to be used on a large scale as a domestic illuminant, must undergo such processes of purification as will render it harmless and innocuous to health and property, and the sooner it is recognized as absolutely essential to purify acetylene before consuming it the sooner will the gas acquire the popularity it deserves.