Verb
To fall or dash against; to touch upon; to strike; to hit; to ciash with; -- with on or upon.
Source: Webster's dictionaryWe know nothing accurately in reality, but [only] as it changes according to the bodily condition, and the constitution of those things that flow upon [the body] and impinge upon it. Democritus
I think I'm a bit of a dreamer. I don't like the reality of life to impinge much on my life. Hugo Weaving
Economics is a strange science. Our subject deals with some of the most important as well as mundane issues that impinge on the human condition. Dale T. Mortensen
In fact we do not know anything infallibly, but only that which changes according to the condition of our body and of the [influences] that reach and impinge upon it. Democritus
... mathematicians progress only by doubt, through humble and constant attempts to impinge on the immense domain of the unknown. Leopold Infeld
They do make you less egotistical. I still manage to think about myself 98 per cent of the time, but at least there is a little window where others can impinge.(On having children) Hugh Laurie