Why no traces in his latest work, or those of his middle age?
Why not the least variation in his religious or philosophical creeds in his latter works, written long after the resurrection, from those composed by him before, or a few years after, Christ's birth?
Some of Philo's earlier works must have been written when our Lord was in his infancy, or at least boyhood.
In short, just take all those passages of Philo which most closely resemble others in the Wisdom of Solomon, and contain the same or nearly the same thoughts, and write them in opposite columns, and no doubt will remain that Philo was not the composer of the Book of Wisdom.

Philo subtle, and with long involved periods knit together by logical connectives: the Book of Wisdom sententious, full of parallelisms, assertory and Hebraistic throughout.

It was either composed by a man who tried to Hebraize the Greek, or, if a translator, by one who tried to Greecise the Hebraisms of his original--not to disguise or hide them--but only so as to prevent them from repelling or misleading the Greek reader.

The different use of the Greek particles in the Wisdom of Solomon, and in the works of Philo, is sufficient to confute the hypothesis of Philo being the author.

As little could it have been written by a Christian.