James Hansen

"Hope comes from understanding that change is still possible."

"The strength of science lies in its ability to self-correct."

"We must distinguish between what we want to be true and what is actually true."

"The ice sheets are telling us a story if we're willing to listen."

"Patience with science is important, but urgency in action is critical."

"Every choice we make has consequences that ripple forward in time."

"Kindness to future generations means acting now on what we know."

"The persistence of false narratives is one of our greatest challenges."

"Scientific integrity requires speaking truth even when it's unpopular."

"We are capable of extraordinary achievements when we work together."

"The question is not whether we can afford to address climate change, but whether we can afford not to."

"Gratitude for the Earth should inspire us to protect it."

"Peace with nature means living within its limits."

"The strength of evidence should guide our actions, not wishful thinking."

"Imagination about what we could accomplish is our greatest asset."

"History will remember this as the era when we chose to act or chose to ignore."

"We must work with others, even those we disagree with, on this fundamental issue."

"The power of science is in its objectivity and self-correction."

"Adventure in climate science means exploring uncomfortable truths."

"Creativity in finding solutions is what we need most now."

"The persistence required to change course is what leadership demands."

"We cannot separate our work from our responsibility to society."

"Dreams of a sustainable future are only achievable if we act today."

"Humor sometimes helps us cope with difficult realities."

"The beauty of scientific discovery is humbling and motivating."

"Death of species and ecosystems is permanent; we must act before it's too late."

"Motivation comes from understanding that our actions matter."

"Inspiration for change comes from young people who understand what's at stake."

"Solitude in reflection helps clarify what we really believe and value."

"The literature on climate science is extensive and consistently points in one direction."