High Wisdom depends on what your alignment is.
- For Good, refer to the Code of Harpers for what Good thinks on racism.
Code of the Harpers wrote:All beings should walk free of fear, with the right to live their lives as they wish.
Lathander, Ilmater and Tyr also support this ideology. Lathander as "Redemption", Ilmater as "Mercy" and Tyr as "Judge on action, not background."
- For Neutral, whatever increases your chances of self-preservation (so wariness). (e.g.: This person is different from me, I don't know what to expect.)
- For Evil, whatever benefits you the most (so tribalism and hate).
As for wisdom vs intelligence. Intelligence is the ability to critically think and analyse, to create information. Wisdom is the ability to glean data from the least likely positions, to make important connections to get more data.
Those with higher intelligence, given the sufficient experience (and thus enough data), will, if Good aligned, rise above "racism." With low wisdom, they'll need a lot of exposure and samples to gather the sufficient data needed to draw a conclusion. However, with higher intelligence they can work with fewer data to get the information needed.
Those with higher wisdom require smaller exposure, as they can produce more data from less samples. They still need the intelligence to review said data. But since they can acquire more data more easily, it's easier to compare and thus critically think.
This is supported by the fact that wisdom influences information GATHERING skills, while intelligence influences information RETENTION(Knowledge) and APPLICATION(Craft,Spellcraft) skills.
For the record - alignments are descriptive, not prescriptive. Good aligned characters can be wary, as it doesn't explicitly describe an anti-good action. However, a neutral individual adhering to Harper-like ideals will find themselves leaning towards good as a consequence, and a good aligned character displaying hatred and tribalism will find themselves less pure of ideals (can still remain good if they remain within limits).