Which preposition to use with fulcrum

of Occurrences 9%

"Life in and with Nature and with the fair silent things of Nature, should be fostered by parents and others," Froebel tells us, "as a chief fulcrum of child-life, and this is accomplished chiefly in play, which is at first simply natural life.

for Occurrences 3%

They form for right a sort of [Greek: os moi pou sto]a fulcrum for supporting its lever.

on Occurrences 3%

If so, it was a fortunate accident, for it served as the tiny fulcrum on which to place the point of that mighty lever which was destined ere long to raise him to the pinnacle of canine erudition.

by Occurrences 2%

On the other hand, the labour party try to use the dissatisfied tenant as a fulcrum by means of which to bring their lever to bear upon the landlord.

in Occurrences 2%

The democratic party found its fulcrum in the South.

from Occurrences 1%

And Oxford was the fulcrum from which the theological revival hoped to move the Church.

Which preposition to use with  fulcrum