Sed omnia praeclara tam difficilia quam rara sunt. - Benedictus de Spinoza

[Spinoza] — the philosopher whom I trust most,... [Original in German: Der Philosoph, dem ich zumeist vertraue,...]

Offer with me reverently a tribute to the manes of the holy, rejected Spinoza. The high World-Spirit pervaded him; the Infinite was his beginning and his end; the Universe was his only and his everlasting love. In holy innocence and in deep humility he beheld himself mirrored in the eternal world, and perceived how he also was its most worthy mirror. He was full of religion, full of the Holy Spirit. Wherefore, he stands there alone and unequalled; master in his art, yet without disciples and without citizenship, sublime above the profane tribe.

Of all heroes, Spinoza was Einstein's greatest. No one expressed more strongly than he a belief in the harmony, the beauty, and, most of all, the ultimate comprehensibility of nature.