assume多用作假设，即本来不成立的
suppose则比较常见，指的是通过现有的证据材料，推测，推理
I assumed that he wouldnot come to attend the funeral.我猜想他不会来参加葬礼。
Suppose he is absent, what shall we do？假设缺席了，我们该怎么办？
水利万物而不争,
而万物莫能与之争。
