A discussion of the role of pattern spotting in mathematics. This chapter still has little formality. The idea is that, in math and also in life, we might make abstract versions of things, then spot patterns in them or in common between different situations, and then ask if those patterns are caused by some abstract structure. We begin with some pattern spotting in number squares, and introduce the arithmetic of the 12-hour clock and look at the patterns on its addition table. We discuss patterns as analogies between situations, and discuss the relationship between visual patterns and abstract patterns, one example being the visual patterns made by multiples of 3 on a number square (or multiples of other fixed numbers). We introduce systemic power structures in society as another example of patterns caused by abstract similarities. We discuss how abstraction can help us spot patterns, with one example beingthe analysis of contentious arguments in society and politics, many of which follow a similar pattern.