Wangari Maathai said this quote

A tree has roots in the soil yet reaches to the sky. It tells us that in order to aspire we need to be grounded and that no matter how high we go it is from our roots that we draw sustenance. It is a reminder to all of us who have had success that we cannot forget where we came from. It signifies that no matter how powerful we become in government or how many awards we receive, our power and strength and our ability to reach our goals depend on the people, those whose work remain unseen, who are the soil out of which we grow, the shoulders on which we stand

~ Wangari Maathai

Throughout my life, I have never stopped to strategize about my next steps. I often just keep walking along, through whichever door opens. I have been on a journey and this journey has never stopped. When the journey is acknowledged and sustained by those I work with, they are a source of inspiration, energy and encouragement. They are the reasons I kept walking, and will keep walking, as long as my knees hold out.

~ Wangari Maathai

Finally I was able to see that if I had a contribution I wanted to make, I must do it, despite what others said. That I was OK the way I was. That it was all right to be strong.

~ Wangari Maathai

No matter how dark the cloud, there is always a thin, silver lining, and that is what we must look for. The silver lining will come, if not to us then to next generation or the generation after that. And maybe with that generation the lining will no longer be thin.

~ Wangari Maathai