The rose Religion grows on a thorn-bush, and we must not be afraid to have our fingers lacerated by the thorns if we would pluck the rose.
Francis Bacon
In the same manner as we are cautioned by religion to show our faith by our works we may very properly apply the principle to philosophy, and judge of it by its works; accounting that to be futile which is unproductive, and still more so, if instead of grapes and olives it yield but the thistle and thorns of dispute and contention.