1.No,I think that's not enough and I think there are mainly three reasons for this.Firstly,there are many excellent people in the world who have the quality of integrity,determination and hard working,but they cannot all be presidents.Sometimes opportunity and the environment around are very important and they will even determine the final result.Secondly,the world is a complicated one,you need to be intelligent enough to overcome some difficulties and to deal with some mean people.That is to say that one cannot be too honest, or he will be the fool.Thirdly,what makes a prasents? Although it is a diffficult question to answer, what we all know is that a leader should be good at controlling the whole situation and get on well with the people around.One cannot expect to be a successful leader if he is not equipped with such ability of leadership.In conclusion, the above is why I think intergrity,determination and hard work cannot take everyone from log cabin to the White House.