The phrase "that one may" is often used to express the purpose or intention behind an action or statement. There are a variety of synonyms that can be used in its place, depending on the context and the tone of the message. Examples include "in order to," "for the purpose of," "with the aim of," "so as to," "to achieve," "with the intention of," "in pursuit of," and "with the goal of." Each of these phrases conveys a slightly different nuance, and the choice of which to use can help shape the meaning and impact of the overall message.