Unless we examine every single cancer cell in the patient we cannot know what has evolved.
And without prices we cannot know what is the most effective or efficient use of that limited spectrum.
Today, apart from a few core skills like reading, writing, math, thinking, imagining and creating, we cannot know what knowledge or skills will be needed when young Freddie or tiny Janet grows up.
But what we do know is that we cannot afford to learn the wrong lessons from its achievements.
And what we really, truly know is that we cannot turn back now.
We cannot know the real story of what happened that night and whether Lewis was showing a different kind of leadership when he told his friends to not speak to the police or when he lied to police himself.
So what keeps me fired up is that I know that we cannot turn back now.
WHITEHOUSE: Remarks by the First Lady at a Campaign Event -- Seattle, WA
To do this, we must know who our students are and what their hopes and dreams are because if we cannot motivate them and inspire them, how do we expect to teach them?
WHITEHOUSE: I Love You Too Much to Let You Fail: A Path to Transformational Change | The White House
应用推荐