I would no more try to reinvent a philosophical system than I would try to reinvent a transportation system. Indeed, far less. As Spinoza puts it:
But as men at first made use of the instruments supplied by nature to accomplish very easy pieces of workmanship, laboriously and imperfectly, and then, when these were finished, wrought other things more difficult with less labour and greater perfection; and so gradually mounted from the simplest operations to the making of tools, and from the making of tools to the making of more complex tools, and fresh feats of workmanship, till they arrived at making, with small expenditure of labour, the vast number of complicated mechanisms which they now possess. So, in like manner, the intellect, by its native strength, makes for itself intellectual instruments, whereby it acquires strength for performing other intellectual operations, and from these operations gets again fresh instruments, or the power of pushing its investigations further, and thus gradually proceeds till it reaches the summit of wisdom.--On the Improvement of the Understanding
It's so much easier and more effective to use the intellectual instruments constructed by the great thinkers of the past than to try to start from scratch on one's own.
About this author. I was excited at first but when I looked him up, it gave me reason to pause and proceed with caution. It seems Waton was convinced that Judaism — not through violence, but with gentle persuasion and example — would take over the world. Whenever I read words like that I think of that twisted rabbit in Hoodwinked and his evil lair.
There was a tremendous movement in the early twentieth century to identify Spinoza with Judaism, and Judaism with the summit of thought. Here is a representative quotation:
The basic idea of the system of Spinoza, namely, that God is the only substance, the ground and origin of all being, is the fundamental expression of the Jewish genius, which has ever manifested itself in divine revelations from the time of Moses and the Prophets, down to modem days. These manifestations of the Jewish genius are not a supernatural phenomenon, but form a part of the great eternal Law which governs all three life spheres, the cosmic, organic and social. The special field of operation of the Jewish genius, however, is the social sphere, and it is due to it that a unified historical development of humanity was made possible. The revelations of the Jewish spirit express the universal law in its entirety ; its past workings as well as its future operations, using the scientific formula of to-day with the same facility as formerly the proofs of imagination and feeling.--Moses Hess /
Rome and Jerusalem; a study in Jewish nationalism
And here is a recent assessment of this movement:
The nineteenth-century Jewish Enlightenment was like a beam of light refracted through a prism into a spectral band of brilliant intellectual colors spread across Western Europe. The prism through which Jewish thought was refracted was a Jew born in Amsterdam in 1632, a Jew so modern in his thinking that the second half of the twentieth century has not yet caught up with him. Excommunicated by the Jews in the seventeenth century, abhorred by the Christians in the eighteenth century, acknowledged great in the nineteenth century, Baruch Spinoza will perhaps not be fully understood even in the twenty-first century. But perhaps by then Spinoza's philosophy will have become the basis of a world religion for neomodern man.--Max I. Dimont /
Jews, God and History, p. 343
So I am inclined to agree with Waton that we are destined to become Jews via the philosophy of Spinoza.