Pythagoras’s account of the word philosophy requires we love it because we lack it. Strauss takes this to mean that we cease loving wisdom to the extent we attain it, which is so crazy that we know we’ve made a wrong turn somewhere.
Philosophy will always be an act of love because, absent love, our justifications can’t fall back on its power to bake bread, build trinkets or fly us to the moon. In this sense it is opposed to the wisdom now called science so far as an intellectually lazy practitioner can justify by pointing to i-pods, vaccines, or cures for cancer, implying that he would just as soon dispense with the knowledge if he could have the results without it. But philosophy is either a love of knowing or is nothing at all.